名詞 modifier:

1. a content word that qualifies the meaning of a noun or verb
   同義詞：qualifier
2. a moderator who makes less extreme or uncompromising
3. a person who changes something
   同義詞：changer
4. a gene that modifies the effect produced by another gene
   同義詞：modifier gene

mod.i.fi.er

n.Grammar （名詞）【語法】
A word, phrase, or clause that limits or qualifies the sense of another word or word group.
語法的修飾詞：用來限定或修飾另一個詞或詞組的感覺的字、詞組或從句