laugh has 7 distinct synonyms spread across 3 of its 4 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. Its one recorded opposite is cry.
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.
Synonyms, antonyms and the broader and narrower relations for laugh come from Princeton University’s WordNet. Full sources and licences.
a facial expression characteristic of a person laughing
“his face wrinkled in a silent laugh of derision”
a humorous anecdote or remark intended to provoke laughter
“he told a very funny joke”
produce laughter