Antonyms of adj important

5 senses of important

Sense 1
important (vs. unimportant), of import -- (of great significance or value; "important people"; "the important questions of the day")

unimportant (vs. important) -- (not important; "a relatively unimportant feature of the system"; "the question seems unimportant")
        => inconsequent, inconsequential -- (lacking worth or importance; "his work seems trivial and inconsequential"; "the quite inconsequent fellow was managed like a puppet")
        => immaterial, indifferent -- ((often followed by `to') lacking importance; not mattering one way or the other; "whether you choose to do it or not is a matter that is quite immaterial (or indifferent)"; "what others think is altogether indifferent to him")
        => fiddling, footling, lilliputian, little, niggling, piddling, piffling, petty, picayune, trivial -- ((informal) small and of little importance; "a fiddling sum of money"; "a footling gesture"; "our worries are lilliputian compared with those of countries that are at war"; "a little (or small) matter"; "a dispute over niggling details"; "limited to petty enterprises"; "piffling efforts"; "giving a police officer a free meal may be against the law, but it seems to be a picayune infraction")
        => lightweight -- (having no importance or influence; "a lightweight intellect")
        => nickel-and-dime, small-time -- (of minor importance; "a nickel-and-dime operation run out of a single rented room"; "a small-time actor")
        => potty -- ((British informal) trivial; "potty little details")

Sense 2
significant (vs. insignificant), important -- (important in effect or meaning; "a significant change in tax laws"; "a significant change in the Constitution"; "a significant contribution"; "significant details"; "statistically significant")


Sense 3
crucial (vs. noncrucial), important -- (of extreme importance; vital to the resolution of a crisis; "a crucial moment in his career"; "a crucial election"; "a crucial issue for women")


Sense 4
authoritative, important -- (having authority or ascendancy or influence; "an important official"; "the captain's authoritative manner")

INDIRECT (VIA influential) -> uninfluential -- (not influential)

Sense 5
important -- (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")

INDIRECT (VIA immodest) -> modest -- (marked by simplicity; having a humble opinion of yourself; "a modest apartment"; "too modest to wear his medals")

Similarity of adj important

5 senses of important

Sense 1
important (vs. unimportant), of import -- (of great significance or value; "important people"; "the important questions of the day")
       => all-important (prenominal), all important (predicate), crucial, essential, of the essence (predicate) -- (of the greatest importance; "the all-important subject of disarmament"; "crucial information"; "in chess cool nerves are of the essence")
       => alpha -- (first in order of importance; "the alpha male in the group of chimpanzees"; "the alpha star in a constellation is the brightest or main star")
       => beta -- (second in order of importance; "the candidate, considered a beta male, was perceived to be unable to lead his party to victory")
       => big -- (significant; "graduation was a big day in his life")
       => burning (prenominal) -- (of immediate import; "burning issues of the day")
       => cardinal, central, fundamental, key, primal -- (serving as an essential component; "a cardinal rule"; "the central cause of the problem"; "an example that was fundamental to the argument"; "computers are fundamental to modern industrial structure")
       => chief (prenominal), main (prenominal), primary (prenominal), principal (prenominal), master (prenominal) -- (most important element; "the chief aim of living"; "the main doors were of solid glass"; "the principal rivers of America"; "the principal example"; "policemen were primary targets"; "the master bedroom"; "a master switch")
       => consequential, eventful -- (having important issues or results; "the year's only really consequential legislation"; "an eventful decision")
       => Copernican -- (of radical or major importance; "a Copernican revolution in modern art")
       => distinguished -- ((used of persons) standing above others in character or attainment or reputation; "our distinguished professor")
       => grand -- (the most important and magnificent in adornment; "grand ballroom"; "grand staircase")
       => grave, grievous, heavy, weighty -- (of great gravity or crucial import; requiring serious thought; "grave responsibilities"; "faced a grave decision in a time of crisis"; "a grievous fault"; "heavy matters of state"; "the weighty matters to be discussed at the peace conference")
       => great, outstanding -- (of major significance or importance; "a great work of art"; "Einstein was one of the outstanding figures of the 20th centurey")
       => historic -- (important in history; "the historic first voyage to outer space")
       => in-chief (postnominal) -- (indicating the head of a staff; "editor-in-chief")
       => measurable -- (of distinguished importance; "a measurable figure in literature")
       => most-valuable -- (designating the player judged to be the most important to the sport; "the most-valuable player award")
       => serious -- (of great consequence; "marriage is a serious matter")
       => strategic -- (highly important to or an integral part of a strategy or plan of action especially in war; "a strategic chess move"; "strategic withdrawal"; "strategic bombing missions")
          Also See-> essential#2; significant#1, important#2; valuable#1

Sense 2
significant (vs. insignificant), important -- (important in effect or meaning; "a significant change in tax laws"; "a significant change in the Constitution"; "a significant contribution"; "significant details"; "statistically significant")
       => momentous -- (of very great significance; "deciding to drop the atom bomb was a very big decision"; "a momentous event")
       => epochal, epoch-making -- (highly significant or important especially bringing about or marking the beginning of a new development or era; "epochal decisions made by Roosevelt and Churchill"; "an epoch-making discovery")
       => earthshaking, world-shaking, world-shattering -- (sufficiently significant to affect the whole world; "earthshaking proposals"; "the contest was no world-shaking affair"; "the conversation...could hardly be called world-shattering")
       => evidential, evidentiary -- (serving as or based on evidence; "evidential signs of a forced entry"; "its evidentiary value")
       => fundamental, profound -- (far-reaching and thoroughgoing in effect especially on the nature of something; "the fundamental revolution in human values that has occurred"; "the book underwent fundamental changes"; "committed the fundamental error of confusing spending with extravagance"; "profound social changes")
       => large -- (fairly large or important in effect; influential; "played a large role in the negotiations")
       => monumental -- (of outstanding significance; "Einstein's monumental contributions to physics")
       => noteworthy, remarkable -- (worthy of notice; "a noteworthy fact is that her students rarely complain"; "a remarkable achievement")
       => probative, probatory -- (tending to prove a particular proposition or to persuade you of the truth of an allegation; "evidence should only be excluded if its probative value was outweighed by its prejudicial effect")
       => operative -- (effective; producing a desired effect; "the operative word")
       => portentous, prodigious -- (of momentous or ominous significance; "such a portentous...monster raised all my curiosity"- Herman Melville; "a prodigious vision")
          Also See-> important#1, of import#1; meaningful#1

Sense 3
crucial (vs. noncrucial), important -- (of extreme importance; vital to the resolution of a crisis; "a crucial moment in his career"; "a crucial election"; "a crucial issue for women")
       => critical, decisive -- (forming or having the nature of a turning point or crisis; "a critical point in the campaign"; "the critical test")
       => life-and-death, life-or-death -- (vitally important; "a life-and-death struggle")
       => pivotal, polar -- (being of crucial importance; "a pivotal event"; "Its pivotal location has also exposed it to periodic invasions"- Henry Kissinger; "the polar events of this study"; "a polar principal")
          Also See-> critical#6; decisive#1; essential#2

Sense 4
authoritative, important -- (having authority or ascendancy or influence; "an important official"; "the captain's authoritative manner")
       => influential (vs. uninfluential) -- (having or exercising influence or power; "an influential newspaper"; "influential leadership for peace")

Sense 5
important -- (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")
       => immodest (vs. modest) -- (having or showing an exaggerated opinion of your importance, ability, etc; "brash immodest boasting")

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