rent has 11 distinct synonyms spread across 7 of its 8 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.
a payment or series of payments made by the lessee to an owner for use of some property, facility, equipment, or service
the return derived from cultivated land in excess of that derived from the poorest land cultivated under similar conditions
Synonyms, antonyms and the broader and narrower relations for rent come from Princeton University’s WordNet. Full sources and licences.