important

adjective

1 an important meeting:

significant, consequential, momentous, of great moment, of import, of great import, of great consequence, far-reaching, major;

critical, crucial, vital, pivotal, decisive, urgent, epoch-making, historic, seminal;

serious, grave, substantial, weighty, signal, material.

▷antonyms unimportant, trivial.

2 the important thing is that you do well in your A levels:

main, chief, principal, key, major, salient, prime, dominant, foremost, supreme, predominant, paramount, overriding, cardinal, crucial, vital, indispensable, critical, essential, significant, urgent;

central, fundamental, basic;

informal number-one.

▷antonyms unimportant, inessential.

3 the school was important to the community:

of value, valuable, valued, useful, of use, beneficial, necessary, essential, indispensable, vital, of the essence;

of concern, of interest, relevant, pertinent, material, germane.

▷antonyms unimportant, irrelevant.

4 he was an important man:

powerful, influential, of influence, well connected, high-ranking, high-level, top-level, controlling, dominant, formidable;

prominent, eminent, preeminent, notable, noteworthy, of note;

distinguished, esteemed, respected, prestigious, celebrated, famous, great, grand;

leading, foremost, outstanding;

informal big, big time, major league, big league.

▷antonyms unimportant, insignificant.