crow has 9 distinct synonyms spread across 3 of its 9 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.
black birds having a raucous call
the cry of a cock (or an imitation of it)
a member of the Siouan people formerly living in eastern Montana
a small quadrilateral constellation in the southern hemisphere near Virgo
express pleasure verbally
“She crowed with joy”
Synonyms, antonyms and the broader and narrower relations for crow come from Princeton University’s WordNet. Full sources and licences.
utter shrill sounds
“The cocks crowed all morning”