modifier Meaning, Definition & Usage

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

WordNet