clap has 10 distinct synonyms spread across 5 of its 10 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
put quickly or forcibly
“The judge clapped him in jail”
cause to strike the air in flight
“The big bird clapped its wings”
clap one's hands or shout after performances to indicate approval
clap one's hands together
“The children were clapping to the music”
strike the air in flight
“the wings of the birds clapped loudly”
strike with the flat of the hand; usually in a friendly way, as in encouragement or greeting
strike together so as to produce a sharp percussive noise
“clap two boards together”
a common venereal disease caused by the bacterium Neisseria gonorrhoeae; symptoms are painful urination and pain around the urethra
Synonyms, antonyms and the broader and narrower relations for clap come from Princeton University’s WordNet. Full sources and licences.