-
inveterate
habitual
-
ibidem
in the same place (used when citing a reference)
-
ichthyology
the branch of zoology that studies fishes
-
iconoclast
someone who attacks cherished ideas or traditional institutions
-
idiosyncrasy
a behavioral attribute that is distinctive and peculiar to an individual
-
idyllic
suggestive of an idyll; charmingly simple and serene
-
ignoble
completely lacking nobility in character or quality or purpose
-
ilk
a kind of person
-
illicit
contrary to accepted morality (especially sexual morality) or convention
-
illimitable
without limits in extent or size or quantity
-
illusory
based on or having the nature of an illusion
-
illustrious
widely known and esteemed
-
imbibe
take in liquids
-
imbue
spread or diffuse through
-
immaculate
completely neat and clean
-
immaterial
(often followed by `to') lacking importance; not mattering one way or the other
-
immense
unusually great in size or amount or degree or especially extent or scope
-
immerse
cause to be immersed
-
imminent
close in time; about to occur
-
immobile
not capable of movement or of being moved
-
immolate
offer as a sacrifice by killing or by giving up to destruction
-
immunity
(medicine) the condition in which an organism can resist disease
-
immure
lock up or confine, in or as in a jail
-
immutable
not subject or susceptible to change or variation in form or quality or nature
-
impair
make worse or less effective
-
impale
pierce with a sharp stake or point
-
impartial
free from undue bias or preconceived opinions
-
impasse
a situation in which no progress can be made or no advancement is possible
-
impassioned
characterized by intense emotion
-
impassive
having or revealing little emotion or sensibility; not easily aroused or excited
-
impeach
bring an accusation against; level a charge against
-
impeccable
without fault or error
-
impecunious
not having enough money to pay for necessities
-
impede
be a hindrance or obstacle to
-
impediment
something immaterial that interferes with or delays action or progress
-
impel
urge or force (a person) to an action; constrain or motivate
-
impending
close in time; about to occur
-
imperative
requiring attention or action
-
imperceptible
impossible or difficult to perceive by the mind or senses
-
imperialism
a policy of extending your rule over foreign countries
-
imperil
pose a threat to; present a danger to
-
imperious
having or showing arrogant superiority to and disdain of those one views as unworthy
-
impertinent
improperly forward or bold
-
imperturbable
not easily perturbed or excited or upset; marked by extreme calm and composure
-
impervious
not admitting of passage or capable of being affected
-
impetuous
characterized by undue haste and lack of thought or deliberation
-
impetus
a force that moves something along
-
impinge
impinge or infringe upon
-
implant
fix or set securely or deeply
-
implausible
highly imaginative but unlikely
-
implement
instrumentation (a piece of equipment or tool) used to effect an end
-
implicate
bring into intimate and incriminating connection
-
implicit
implied though not directly expressed; inherent in the nature of something
-
implore
call upon in supplication; entreat
-
implosion
a sudden inward collapse
-
impolitic
not politic
-
imponderable
difficult or impossible to evaluate with precision
-
import
bring in from abroad
-
importune
beg persistently and urgently
-
imposing
used of a person's appearance or behavior; befitting an eminent person
-
imposition
the act of imposing something (as a tax or an embargo)
-
impotent
(of a male) unable to copulate
-
impound
place or shut up in a pound
-
imprecation
the act of calling down a curse that invokes evil (and usually serves as an insult)
-
impregnable
immune to attack; incapable of being tampered with
-
impresario
a sponsor who books and stages public entertainments
-
impressionable
easily impressed or influenced
-
Impressionism
a school of late 19th century French painters who pictured appearances by strokes of unmixed colors to give the impression of reflected light
-
imprimatur
formal and explicit approval
-
impromptu
with little or no preparation or forethought
-
improvise
manage in a makeshift way; do with whatever is at hand
-
impudence
the trait of being rude and impertinent; inclined to take liberties
-
impugn
attack as false or wrong
-
impulse
an impelling force or strength
-
impulsive
without forethought
-
impunity
exemption from punishment or loss
-
impute
attribute or credit to
-
in toto
in entirety
-
inadvertent
happening by chance or unexpectedly or unintentionally
-
inadvisable
not advisable
-
inalienable
incapable of being repudiated or transferred to another
-
inane
devoid of intelligence
-
inanimate
not endowed with life
-
inaudible
impossible to hear; imperceptible by the ear
-
inaugurate
commence officially
-
inborn
normally existing at birth
-
incalculable
not capable of being computed or enumerated
-
incandescent
emitting light as a result of being heated
-
incantation
a ritual recitation of words or sounds believed to have a magical effect
-
incapacitate
make unable to perform a certain action
-
incarcerate
lock up or confine, in or as in a jail
-
incarnate
possessing or existing in bodily form
-
incendiary
capable of catching fire spontaneously or causing fires or burning readily
-
incense
make furious
-
incentive
a positive motivational influence
-
incessant
uninterrupted in time and indefinitely long continuing
-
incest
sexual intercourse between persons too closely related to marry (as between a parent and a child)
-
inchoate
only partly in existence; imperfectly formed
-
incidental
(sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence
-
incinerate
become reduced to ashes
-
incipient
only partly in existence; imperfectly formed
-
incision
the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)
-
incisive
having or demonstrating ability to recognize or draw fine distinctions
-
incite
provoke or stir up
-
incivility
deliberate discourtesy
-
inclement
(of weather or climate) severe
-
inclusive
including much or everything; and especially including stated limits
-
incognito
without revealing one's identity
-
incommunicado
without the means or right to communicate
-
incomparable
such that comparison is impossible; unsuitable for comparison or lacking features that can be compared
-
incompatibility
the quality of being unable to exist or work in congenial combination
-
inconceivable
totally unlikely
-
incongruous
lacking in harmony or compatibility or appropriateness
-
inconsiderate
lacking regard for the rights or feelings of others
-
inconspicuous
not prominent or readily noticeable
-
incontrovertible
impossible to deny or disprove
-
incorporate
make into a whole or make part of a whole
-
incorrigible
impervious to correction by punishment
-
incredulous
not disposed or willing to believe; unbelieving
-
increment
the amount by which something increases
-
incriminate
suggest that someone is guilty
-
incubus
a male demon believed to lie on sleeping persons and to have sexual intercourse with sleeping women
-
inculcate
teach and impress by frequent repetitions or admonitions
-
inculpate
suggest that someone is guilty
-
incumbent
necessary (for someone) as a duty or responsibility; morally binding
-
incursion
the act of entering some territory or domain (often in large numbers)
-
indecent
not in keeping with accepted standards of what is right or proper in polite society
-
indecorous
lacking propriety and good taste in manners and conduct
-
indelible
cannot be removed or erased
-
indemnity
protection against future loss
-
indict
accuse formally of a crime
-
indifferent
marked by a lack of interest
-
indigenous
originating where it is found
-
indigent
poor enough to need help from others
-
indignant
angered at something unjust or wrong
-
indiscreet
lacking discretion; injudicious
-
indiscriminate
failing to make or recognize distinctions
-
indispensable
not to be dispensed with; essential
-
indistinct
not clearly defined or easy to perceive or understand
-
indolent
disinclined to work or exertion
-
indomitable
impossible to subdue
-
indubitable
too obvious to be doubted
-
induce
cause to do; cause to act in a specified manner
-
indulge
yield (to); give satisfaction to
-
indurate
make hard or harder
-
industrious
characterized by hard work and perseverance
-
inebriate
make drunk (with alcoholic drinks)
-
ineffable
defying expression or description
-
ineffectual
not producing an intended effect
-
ineluctable
impossible to avoid or evade:"inescapable conclusion"
-
inept
generally incompetent and ineffectual
-
inert
unable to move or resist motion
-
inestimable
beyond calculation or measure
-
inevitable
incapable of being avoided or prevented
-
inexorable
not to be placated or appeased or moved by entreaty
-
infallible
incapable of failure or error
-
infamous
known widely and usually unfavorably
-
infamy
a state of extreme dishonor
-
infantry
an army unit consisting of soldiers who fight on foot
-
infatuate
arouse unreasoning love or passion in and cause to behave in an irrational way
-
infer
conclude by reasoning; in logic
-
infernal
characteristic of or resembling Hell
-
infidel
a person who does not acknowledge your god
-
infidelity
the quality of being unfaithful
-
infiltrate
pass through an enemy line; in a military conflict
-
infinitesimal
infinitely or immeasurably small
-
infirmary
a health facility where patients receive treatment
-
infirmity
the state of being weak in health or body (especially from old age)
-
inflammatory
arousing to action or rebellion
-
influx
the process of flowing in
-
infraction
a crime less serious than a felony
-
infringe
advance beyond the usual limit
-
infuriate
make furious
-
infuse
fill, as with a certain quality
-
ingenious
showing inventiveness and skill
-
ingrate
a person who shows no gratitude
-
ingratiate
gain favor with somebody by deliberate efforts
-
ingress
the act of entering
-
inherent
existing as an essential constituent or characteristic
-
inhibit
limit the range or extent of
-
inimical
not friendly
-
inimitable
defying imitation; matchless
-
iniquitous
characterized by iniquity; wicked because it is believed to be a sin
-
iniquity
absence of moral or spiritual values
-
initiate
set in motion, start an event or prepare the way for
-
initiation
the act of starting something for the first time; introducing something new
-
injunction
(law) a judicial remedy issued in order to prohibit a party from doing or continuing to do a certain activity
-
inkling
a slight suggestion or vague understanding
-
innate
present at birth but not necessarily hereditary; acquired during fetal development
-
innervate
stimulate to action
-
innocuous
not injurious to physical or mental health
-
innovative
being or producing something like nothing done or experienced or created before
-
innuendo
an indirect (and usually malicious) implication
-
inopportune
not opportune
-
inordinate
beyond normal limits
-
inquest
an inquiry into the cause of an unexpected death
-
inquisition
a severe interrogation (often violating the rights or privacy of individuals)
-
inquisitive
inquiring or appearing to inquire
-
insatiable
impossible to satisfy
-
inscribe
carve, cut, or etch into a material or surface
-
inscrutable
of an obscure nature
-
insensate
devoid of feeling and consciousness and animation
-
insidious
working or spreading in a hidden and usually injurious way
-
insignia
a badge worn to show official position
-
insinuate
give to understand
-
insipid
lacking interest or significance or impact
-
insolent
marked by casual disrespect
-
insolvent
unable to meet or discharge financial obligations
-
insouciant
marked by blithe unconcern
-
installment
a payment of part of a debt; usually paid at regular intervals
-
instant
a very short time (as the time it takes the eye to blink or the heart to beat)
-
instigate
provoke or stir up
-
insubordinate
not submissive to authority
-
insufferable
used of persons or their behavior
-
insular
relating to or characteristic of or situated on an island
-
insuperable
incapable of being surmounted or excelled
-
insurgent
in opposition to a civil authority or government
-
insurrection
organized opposition to authority; a conflict in which one faction tries to wrest control from another
-
intangible
incapable of being perceived by the senses especially the sense of touch
-
integral
existing as an essential constituent or characteristic
-
integration
the act of combining into an integral whole
-
integrate
make into a whole or make part of a whole
-
integument
an outer protective covering such as the skin of an animal or a cuticle or seed coat or rind or shell
-
intelligentsia
an educated and intellectual elite
-
intensive
characterized by a high degree or intensity; often used as a combining form
-
inter
place in a grave or tomb
-
intercede
act between parties with a view to reconciling differences
-
intercept
seize on its way
-
interdict
an ecclesiastical censure by the Roman Catholic Church withdrawing certain sacraments and Christian burial from a person or all persons in a particular district
-
interject
to insert between other elements
-
interloper
someone who intrudes on the privacy or property of another without permission
-
interlude
an intervening period or episode
-
interminable
tiresomely long; seemingly without end
-
internecine
(of conflict) within a group or organization
-
interpolate
insert words into texts, often falsifying it thereby
-
interpose
introduce
-
interregnum
the time between two reigns, governments, etc.
-
interrogate
pose a series of questions to
-
intersperse
introduce one's writing or speech with certain expressions
-
interstate
involving and relating to the mutual relations of states especially of the United States
-
intervene
be placed or located between other things or extend between spaces and events
-
intestate
having made no legally valid will before death or not disposed of by a legal will
-
intimate
imply as a possibility
-
intractable
not tractable; difficult to manage or mold
-
intransigent
impervious to pleas, persuasion, requests, reason
-
intrepid
invulnerable to fear or intimidation
-
intricate
having many complexly arranged elements; elaborate
-
intrigue
a crafty and involved plot to achieve your (usually sinister) ends
-
intrinsic
belonging to a thing by its very nature
-
introspection
the contemplation of your own thoughts and desires and conduct
-
inundate
fill or cover completely, usually with water
-
inure
cause to accept or become hardened to; habituate
-
invalidate
make invalid for use
-
invective
abusive or venomous language used to express blame or censure or bitter deep-seated ill will
-
inveigh
complain bitterly
-
inveigle
influence or urge by gentle urging, caressing, or flattering
-
inventive
(used of persons or artifacts) marked by independence and creativity in thought or action
-
inverse
reversed (turned backward) in order or nature or effect
-
invidious
containing or implying a slight or showing prejudice
-
invincible
incapable of being overcome or subdued
-
inviolate
(of a woman) having the hymen unbroken
-
invocation
the act of appealing for help
-
irascible
quickly aroused to anger
-
irate
feeling or showing extreme anger
-
ironic
characterized by often poignant difference or incongruity between what is expected and what actually is
-
irrational
not consistent with or using reason
-
irrelevant
having no bearing on or connection with the subject at issue
-
irreparable
impossible to repair, rectify, or amend
-
irresolute
uncertain how to act or proceed
-
irrevocable
incapable of being retracted or revoked
-
isosceles
(of a triangle) having two sides of equal length
-
itinerant
traveling from place to place to work
-
itinerary
an established line of travel or access