female parent has 1 distinct synonym spread across 1 of its 1 sense. 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 one recorded opposite is male parent.
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 woman who has given birth to a child (also used as a term of address to your mother)
“the mother of three children”
Synonyms, antonyms and the broader and narrower relations for female parent come from Princeton University’s WordNet. Full sources and licences.