M / mŏdĭfĭcātor
noun

mŏdĭfĭcātor

gen. mŏdĭfĭcātōris · gender masculine · decl. 3rd
one who gives the proper measure; a moderator, manager
one who gives the proper measure to a thing, a moderator, manager (post-class.): tibicen omnis modi peritus modificator, App. Flor. p. 341.