domestic has 3 distinct synonyms spread across 2 of its 6 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. Its 2 recorded opposites are foreign, undomestic.
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.
of concern to or concerning the internal affairs of a nation
“domestic issues such as tax rate and highway construction”
of or involving the home or family
“domestic worries”
a servant who is paid to perform menial tasks around the household
2 of the 6 recorded senses carry no synonym, antonym or related term, so they are not shown above. Every sense, with its definition and examples, is on the full entry for domestic.
Synonyms, antonyms and the broader and narrower relations for domestic come from Princeton University’s WordNet. Full sources and licences.