renter has 1 distinct synonym spread across 1 of its 2 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.
someone who pays rent to use land or a building or a car that is owned by someone else
“the landlord can evict a tenant who doesn't pay the rent”
an owner of property who receives payment for its use by another person
Synonyms, antonyms and the broader and narrower relations for renter come from Princeton University’s WordNet. Full sources and licences.