Synonyms of thumbs down in English:

thumbs down

See definition of thumbs up


1‘moves to demolish a historic former engine shed have been given the thumbs down’

rejection, refusal, veto, no, negation, rebuff, disapproval, turning down, turndown, non-acceptance, declining, dismissal, spurning, cold shoulder, cold-shouldering, snub, snubbing
red light, knock-back, kick in the teeth, smack in the eye, smack in the face

approval, welcome, thumbs up