clasp has 8 distinct synonyms spread across 3 of its 6 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 unclasp.
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.
fasten with or as if with a brooch
Synonyms, antonyms and the broader and narrower relations for clasp come from Princeton University’s WordNet. Full sources and licences.
a fastener (as a buckle or hook) that is used to hold two things together