Word after pen, pet or proper

NAME

Think of a term that follows "first" or "last" to identify someone, often seen on forms or labels.

This clue hints at a word that commonly follows "pen," "pet," or "proper" in everyday phrases. Think of "pen name" (a pseudonym), "pet name" (a nickname), or "proper name" (a specific title). The answer is simply the shared word that completes all three—"name."