Stunned silence/disbelief [closed]

Solution 1:

Stunned is an adjective meaning:

very shocked or surprised:

  • They stood in stunned silence beside the bodies.

Probably the term you are looking for is “modifier”:

A modifier is a word or group of words that modifies another word or group. In some descriptions of grammar, only words that are used before a noun are called modifiers.

(Cambridge Dictionary)