all-important

all–im·por·tant

adjective \ˌȯl-im-ˈpȯr-t^ənt, -tənt\

: very important

Full Definition of ALL-IMPORTANT

:  of very great or greatest importance <an all–important question>

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First Known Use of ALL-IMPORTANT

1787

Related to ALL-IMPORTANT

Synonyms

all-important, critical, imperative, indispensable, integral, must-have, necessary, necessitous, needed, needful, required, requisite, vital

Antonyms

dispensable, inessential, needless, nonessential, unessential, unnecessary, unneeded

Related Words

prerequisite; compulsory, mandatory, nonelective, obligatory; consequential, crucial, important, major, material, meaningful, momentous, significant, substantial, weighty; basic, central, fundamental, key, organic; insistent, persistent, pressing, urgent

Near Antonyms

undesired, unwanted; inconsequential, insignificant, unimportant; excess, external, extra, extraneous, superfluous, surplus