Synonyms of broaden in English:

broaden


See US English definition of broaden

See UK English definition of broaden

See Spanish definition of ampliar

verb

1‘her smile broadened’

SYNONYMS
widen, become broader, make broader, become wider, make wider, expand, fill out, stretch, stretch out, draw out, spread out, deepen, thicken
ANTONYMS

narrow

2‘the government attempted to broaden its political base’

SYNONYMS
expand, enlarge, extend, widen, swell
increase, augment, supplement, add to, amplify, fill out
develop, enrich, enhance, intensify, improve, build on, open up
ANTONYMS

diminish