A thumbs-up or a thumbs-up sign is a sign that you make by raising your thumb to show that you agree with someone, that you are happy with an idea or situation, or that everything is all right.
She checked the hall, then gave the others a thumbs-up sign.
2. singular noun
If you give a plan, idea, or suggestion the thumbs-up, you indicate that you approve of it and are willing to accept it.
[informal]
The financial markets have given the thumbs up to the new policy. [+ to]
It more or less gets the thumbs up from everyone.
thumbs up in British English
an indication of encouragement, approval, or acceptance
See full dictionary entry for thumb
thumbs up in American English
a signal of acceptance or approval
See full dictionary entry for thumb
Examples of 'thumbs up' in a sentence
thumbs up
Satisfied, he gave a ` thumbs up " to the mechanic who then pulled out the chocks and, once more, saluted.
Terman, Douglas CORMORANT
If she gave the thumbs up to lace, then every camisole top, every silk blouse would be trimmed with it.
Pacter, Trudi YELLOW BIRD
She is jumping up and down and punching the air, sticking her thumbs up to the sky.