Attach with string

TIEON

Secure something loosely with a knot or cord.

The clue "Attach with string" hints at the action of tying something on, which directly suggests the answer "TIEON." The wordplay is straightforward, combining "tie" (to fasten with string) and "on" (indicating attachment). It’s a simple charade where the two words merge to form the solution. Think of tying a tag onto a gift or securing something with a piece of string.