blast has 21 distinct synonyms spread across 11 of its 16 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.
make a strident sound
“She tended to blast when speaking into a microphone”
apply a draft or strong wind to to
“the air conditioning was blasting cold air at us”
make with or as if with an explosion
“blast a tunnel through the Alps”
shrivel or wither or mature imperfectly
Synonyms, antonyms and the broader and narrower relations for blast come from Princeton University’s WordNet. Full sources and licences.
an explosion (as of dynamite)
a highly pleasurable or exciting experience
“we had a good time at the party”