100 Words A High School Freshman Should Know 99 words

These are the words from the American Heritage Dictionary editors' "100 Words A High School Freshman Should Know."
  1. accentuate
    to stress, single out as important
  2. alliteration
    use of the same consonant at the beginning of each stressed syllable in a line of verse
  3. analogy
    drawing a comparison in order to show a similarity in some respect
  4. antibody
    any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response
  5. aspire
    have an ambitious plan or a lofty goal
  6. bamboozle
    conceal one's true motives from especially by elaborately feigning good intentions so as to gain an end
  7. bizarre
    conspicuously or grossly unconventional or unusual
  8. boisterous
    full of rough and exuberant animal spirits
  9. boycott
    a group's refusal to have commercial dealings with some organization in protest against its policies
  10. camouflage
    an outward semblance that misrepresents the true nature of something
  11. chronology
    the determination of the actual temporal sequence of past events
  12. commemorate
    call to remembrance; keep alive the memory of someone or something, as in a ceremony
  13. cower
    crouch or curl up
  14. decorum
    propriety in manners and conduct
  15. deduction
    the act of subtracting (removing a part from the whole)
  16. deign
    do something that one considers to be below one's dignity
  17. despondent
    without or almost without hope
  18. dialogue
    a conversation between two persons
  19. divulge
    make known to the public information that was previously known only to a few people or that was meant to be kept a secret
  20. eclectic
    selecting what seems best of various styles or ideas
  21. ellipse
    a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it
  22. embargo
    a government order imposing a trade barrier
  23. enthusiastic
    having or showing great excitement and interest
  24. exponent
    a mathematical notation indicating the number of times a quantity is multiplied by itself
  25. exult
    feel extreme happiness or elation
  26. fallacy
    a misconception resulting from incorrect reasoning
  27. flourish
    grow vigorously
  28. formidable
    extremely impressive in strength or excellence
  29. gargoyle
    an ornament consisting of a grotesquely carved figure of a person or animal
  30. guerrilla
    a member of an irregular armed force that fights a stronger force by sabotage and harassment
  31. guru
    a Hindu or Buddhist religious leader and spiritual teacher
  32. heritage
    that which is inherited; a title or property or estate that passes by law to the heir on the death of the owner
  33. hieroglyphic
    a writing system using picture symbols; used in ancient Egypt
  34. hologram
    the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holography
  35. hypocrisy
    insincerity by virtue of pretending to have qualities or beliefs that you do not really have
  36. immune
    relating to the condition of immunity
  37. impertinent
    improperly forward or bold
  38. inference
    the reasoning involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observation
  39. introspection
    the contemplation of your own thoughts and desires and conduct
  40. jaunty
    having a cheerful, lively, and self-confident air
  41. jovial
    full of or showing high-spirited merriment
  42. kilometer
    a metric unit of length equal to 1000 meters (or 0.621371 miles)
  43. labyrinth
    complex system of paths or tunnels in which it is easy to get lost
  44. laconic
    brief and to the point; effectively cut short
  45. lichen
    any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.
  46. light-year
    the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers
  47. maneuver
    a military training exercise
  48. marsupial
    mammals of which the females have a pouch (the marsupium) containing the teats where the young are fed and carried
  49. metaphor
    a figure of speech in which an expression is used to refer to something that it does not literally denote in order to suggest a similarity
  50. mosaic
    art consisting of a design made of small pieces of colored stone or glass
  51. mutation
    a change or alteration in form or qualities
  52. nebula
    an immense cloud of gas (mainly hydrogen) and dust in interstellar space
  53. nocturnal
    belonging to or active during the night
  54. nuisance
    (law) a broad legal concept including anything that disturbs the reasonable use of your property or endangers life and health or is offensive
  55. omnivore
    an animal that feeds on both animal and vegetable substances
  56. outrageous
    greatly exceeding bounds of reason or moderation
  57. ozone
    a colorless gas (O3) soluble in alkalis and cold water; a strong oxidizing agent; can be produced by electric discharge in oxygen or by the action of ultraviolet radiation on oxygen in the stratosphere (where it acts as a screen for ultraviolet radiation)
  58. parasite
    an animal or plant that lives in or on a host (another animal or plant); it obtains nourishment from the host without benefiting or killing the host
  59. participle
    a non-finite form of the verb; in English it is used adjectivally and to form compound tenses
  60. phloem
    (botany) tissue that conducts synthesized food substances (e.g., from leaves) to parts where needed; consists primarily of sieve tubes
  61. polygon
    a closed plane figure bounded by straight sides
  62. protagonist
    the principal character in a work of fiction
  63. pulverize
    make into a powder by breaking up or cause to become dust
  64. quandary
    state of uncertainty or perplexity especially as requiring a choice between equally unfavorable options
  65. quarantine
    isolation to prevent the spread of infectious disease
  66. quota
    a prescribed number
  67. rainforest
    a forest with heavy annual rainfall
  68. random
    lacking any definite plan or order or purpose; governed by or depending on chance
  69. recede
    pull back or move away or backward
  70. Renaissance
    the period of European history at the close of the Middle Ages and the rise of the modern world; a cultural rebirth from the 14th through the middle of the 17th centuries
  71. renegade
    someone who rebels and becomes an outlaw
  72. repose
    freedom from activity (work or strain or responsibility)
  73. sacrifice
    the act of killing (an animal or person) in order to propitiate a deity
  74. silhouette
    a drawing of the outline of an object; filled in with some uniform color
  75. solstice
    either of the two times of the year when the sun is at its greatest distance from the celestial equator
  76. spectrum
    a broad range of related objects or values or qualities or ideas or activities
  77. stereotype
    a conventional or formulaic conception or image
  78. strategy
    an elaborate and systematic plan of action
  79. suffrage
    a legal right guaranteed by the 15th amendment to the US Constitution; guaranteed to women by the 19th amendment
  80. symbiosis
    the relation between two different species of organisms that are interdependent; each gains benefits from the other
  81. tariff
    a government tax on imports or exports
  82. technique
    a practical method or art applied to some particular task
  83. tempo
    (music) the speed at which a composition is to be played
  84. toxin
    a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species
  85. tranquility
    an untroubled state; free from disturbances
  86. tumult
    a state of commotion and noise and confusion
  87. tundra
    a vast treeless plain in the Arctic regions where the subsoil is permanently frozen
  88. ultraviolet
    having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end
  89. unanimous
    in complete agreement
  90. undulate
    move in a wavy pattern or with a rising and falling motion
  91. vaccine
    immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies
  92. vacillate
    be undecided about something; waver between conflicting positions or courses of action
  93. vertebrate
    animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
  94. virtuoso
    someone who is dazzlingly skilled in any field
  95. voracious
    devouring or craving food in great quantities
  96. wretched
    deserving or inciting pity
  97. xylem
    the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels
  98. yacht
    an expensive vessel propelled by sail or power and used for cruising or racing
  99. zoology
    the branch of biology that studies animals