qualify has 8 distinct synonyms spread across 5 of its 7 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 one recorded opposite is disqualify.
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.
pronounce fit or able
“She was qualified to run the marathon”
make more specific
“qualify these remarks”
make fit or prepared
“Your education qualifies you for this job”
describe or portray the character or the qualities or peculiarities of
“You can characterize his behavior as that of an egotist”
Synonyms, antonyms and the broader and narrower relations for qualify come from Princeton University’s WordNet. Full sources and licences.