choke has 30 distinct synonyms spread across 12 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.
breathe with great difficulty, as when experiencing a strong emotion
“She choked with emotion when she spoke about her deceased husband”
fail to perform adequately due to tension or agitation
“The team should have won hands down but choked, disappointing the coach and the audience”
check or slow down the action or effect of
“She choked her anger”
impair the respiration of or obstruct the air passage of
“The foul air was slowly suffocating the children”
pass from physical life and lose all bodily attributes and functions necessary to sustain life
“She died from cancer”
a coil of low resistance and high inductance used in electrical circuits to pass direct current and attenuate alternating current
a valve that controls the flow of air into the carburetor of a gasoline engine
Synonyms, antonyms and the broader and narrower relations for choke come from Princeton University’s WordNet. Full sources and licences.