Definition of all-important
:of very great or greatest importance
- an all-important question
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First Known Use of all-important
1748
all-important Synonyms
Synonyms
all-important, critical, imperative, indispensable, integral, must-have, necessary, necessitous, needed, needful, required, requisite, vitalAntonyms
dispensable, inessential, needless, nonessential, unessential, unnecessary, unneededRelated Words
prerequisite; compulsory, mandatory, nonelective, obligatory; consequential, crucial, important, major, material, meaningful, momentous, significant, substantial, weighty; basic, central, fundamental, key, organic; insistent, persistent, pressing, urgentNear Antonyms
undesired, unwanted; inconsequential, insignificant, unimportant; excess, external, extra, extraneous, superfluous, surplusALL-IMPORTANT Defined for English Language Learners
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