vest has 6 distinct synonyms spread across 4 of its 7 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.
Synonyms, antonyms and the broader and narrower relations for vest come from Princeton University’s WordNet. Full sources and licences.
place (authority, property, or rights) in the control of a person or group of persons
“She vested her vast fortune in her two sons”
become legally vested
“The property vests in the trustees”
clothe oneself in ecclesiastical garments
a man's sleeveless garment worn underneath a coat
a collarless men's undergarment for the upper part of the body