Synonyms of key in English:

key


See definition of key

noun

1‘the key to the mystery lay elsewhere’

SYNONYMS

answer, clue, solution, explanation, pointer, cue, lead

basis of, foundation for, requisite for

condition, precondition, essential, means, way, route, path, passport, secret, formula

guide, gloss, glossary, interpretation, explication, translation, clarification, exposition, annotation, index, legend, code

2‘a song in a minor key’

SYNONYMS

tone, pitch, timbre, tonality, tone colour, modulation

3‘it was like the sixties all over again, in a more austerely intellectual key’

SYNONYMS

style, character, mood, vein, spirit, feel, feeling, flavour, quality, humour, atmosphere


adjective

1‘he was a key figure in formulating policy’

SYNONYMS

crucial, central, essential, indispensable, basic, fundamental, pivotal, critical, decisive, dominant, vital, principal, salient, prime, chief, major, leading, main, important, significant

ANTONYMS

secondary, peripheral