homeless has 4 distinct synonyms spread across 3 of its 4 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 unfortunate without housing
“a homeless was found murdered in Central Park”
poor people who unfortunately do not have a home to live in
“the homeless became a problem in the large cities”
Synonyms, antonyms and the broader and narrower relations for homeless come from Princeton University’s WordNet. Full sources and licences.
physically or spiritually homeless or deprived of security
“made a living out of shepherding dispossed people from one country to another”