Definition of thumbs up or down in English:
informal An indication of satisfaction or approval (or of rejection or failure): plans to build a house on the site have been given the thumbs down by the Department of the Environment
[with reference to the signal of approval or disapproval used by spectators at a Roman amphitheatre; the sense has been reversed, as the Romans used ‘thumbs down’ to signify that a beaten gladiator had performed well and should be spared, and ‘thumbs up’ to call for his death]
More example sentences
- Many watching the march demonstrated their approval by giving a thumbs up or by clapping.
- It would be a pity that this event would not be celebrated and the thumbs up sign has already given it the green light.
- I made my challenge and he accepted it with his version of a thumbs up.
rejection, refusal, veto, no, negation, rebuff, disapproval, turning down, turndown, non-acceptance, declining, dismissal, spurning, cold shoulder, cold-shouldering, snub, snubbing
permission, liberty, authorization, consent, yes, leave, authority, sanction, ratification, licence, dispensation, nod, assent, acquiescence, agreement, blessing, imprimatur, rubber stamp, clearance, acceptance