honor-bound

[ on-er-bound ]
/ ˈɒn ərˈbaʊnd /

adjective

bound by or placed under the obligation of honor: She felt honor-bound to defend her friend.

Idioms and Phrases with honor bound

honor bound

Obliged by one's personal integrity, as in She was honor bound to admit that it was her work and not her sister's. Also see on one's honor.