important

If you have to pass a test to graduate, the test is important. It is vital, necessary, crucial.

The President is the most important person in the country. Children are important to parents, and parents are certainly important to their children. Different people think different things are important: a new movie might be important to you because you care about it a lot, even if it's not important in the same way as food and water. People often say "Good study habits are important" or "Communication is important." Important things matter.

Definitions of important
  1. adjective
    important in effect or meaning
    synonyms: significant
    of import
    of great significance or value
    meaningful
    having a meaning or purpose
    momentous
    of very great significance
    epoch-making, epochal
    highly significant or important especially bringing about or marking the beginning of a new development or era
    earthshaking, world-shaking, world-shattering
    sufficiently significant to affect the whole world
    evidential, evidentiary
    serving as or based on evidence
    fundamental, profound
    far-reaching and thoroughgoing in effect especially on the nature of something
    large
    fairly large or important in effect; influential
    monumental
    of outstanding significance
    noteworthy, remarkable
    worthy of notice
    probative, probatory
    tending to prove a particular proposition or to persuade you of the truth of an allegation
    operative
    effective; producing a desired effect
    portentous, prodigious
    of momentous or ominous significance
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    Antonyms:
    insignificant, unimportant
    devoid of importance, meaning, or force
    unimportant
    not important
    meaningless, nonmeaningful
    having no meaning or direction or purpose
    hole-and-corner, hole-in-corner
    relating to the peripheral and unimportant aspects of life
    flimsy, fragile, slight, tenuous, thin
    lacking substance or significance
    inappreciable
    too small to make a significant difference
    light
    having little importance
    superficial, trivial
    of little substance or significance
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  2. adjective
    of extreme importance; vital to the resolution of a crisis
    synonyms: crucial
    critical
    being in or verging on a state of crisis or emergency
    critical, decisive
    forming or having the nature of a turning point or crisis
    life-and-death, life-or-death
    vitally important
    pivotal, polar
    being of crucial importance
    decisive
    determining or having the power to determine an outcome
    essential
    basic and fundamental
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    Antonyms:
    noncrucial
    of little importance; not decisive
  3. adjective
    of great significance or value
    important people”
    “the important questions of the day”
    synonyms: of import
    essential
    basic and fundamental
    all important, all-important, crucial, essential, of the essence
    of the greatest importance
    alpha
    first in order of importance
    beta
    second in order of importance
    big
    significant
    burning
    of immediate import
    cardinal, central, fundamental, key, primal
    serving as an essential component
    chief, main, master, primary, principal
    most important element
    consequential, eventful
    having important issues or results
    Copernican
    of radical or major importance
    distinguished, eminent
    (used of persons) standing above others in character or attainment or reputation
    grand
    the most important and magnificent in adornment
    grave, grievous, heavy, weighty
    of great gravity or crucial import; requiring serious thought
    great, outstanding
    of major significance or importance
    historic
    important in history
    in-chief
    indicating the head of a staff
    measurable
    of distinguished importance
    most-valuable
    designating the player judged to be the most important to the sport
    serious
    of great consequence
    strategic
    highly important to or an integral part of a strategy or plan of action especially in war
    significant
    important in effect or meaning
    valuable
    having great material or monetary value especially for use or exchange
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    Antonyms:
    unimportant
    not important
    inessential, unessential
    not basic or fundamental
    inconsequent, inconsequential
    lacking worth or importance
    immaterial, indifferent
    (often followed by `to') lacking importance; not mattering one way or the other
    fiddling, footling, lilliputian, little, niggling, petty, picayune, piddling, piffling, trivial
    (informal) small and of little importance
    lightweight
    having no importance or influence
    nickel-and-dime, small-time
    of minor importance
    potty
    (British informal) trivial
    meaningless, nonmeaningful
    having no meaning or direction or purpose
    insignificant, unimportant
    devoid of importance, meaning, or force
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  4. adjective
    having authority or ascendancy or influence
    “an important official”
    synonyms: authoritative
    influential
    having or exercising influence or power
  5. adjective
    having or suggesting a consciousness of high position
    “recited the decree with an important air”
    “took long important strides in the direction of his office”
    Synonyms:
    immodest
    having or showing an exaggerated opinion of your importance, ability, etc
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