premodifier
noun /ˌpriːˈmɒdɪfaɪə(r)/
/ˌpriːˈmɑːdɪfaɪər/
(grammar)- a word, especially an adjective or a noun, that is placed before a noun and describes it or limits its meaning in some way
- In ‘a loud noise’, the adjective ‘loud’ is a premodifier.