click has 20 distinct synonyms spread across 10 of its 11 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.
produce a click
“Xhosa speakers click”
become clear or enter one's consciousness or emotions
“It dawned on him that she had betrayed him”
a stop consonant made by the suction of air into the mouth (as in Bantu)
Synonyms, antonyms and the broader and narrower relations for click come from Princeton University’s WordNet. Full sources and licences.
depression of a button on a computer mouse
“a click on the right button for example”