Synonyms for Qualifier:

n.

allophone, allomorph, collocate, antecedent, case, cleft sentence, article, clause, accusative, adjunct. contestant, contender, all-comers, entrant, favourite, the competition, favorite, field, candidate, competitor. championship, challenge, close season, clash, crown, the Commonwealth Games, contest, cup, bye, card. adjective (noun)
adjunct, modifier.
grammar (noun)
language, usage, subject, form, object, phrase, structure, conjugation, syntax, formulation, wording, predicate, phraseology, grammar.
qualifier (noun)
modifier.

Other synonyms:

modifier
modifier.
Other relevant words:
all-comers, clause, crown, collocate, adjunct, contest, favorite, bye, competitor, cup, challenge, allophone, accusative, allomorph, antecedent, modifier, contender, article, championship, contestant, favourite, candidate, field, entrant, clash, case, card.