bound by or placed under the obligation of honor: She felt honor-bound to defend her friend.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for honor boundappreciative, obliged, thankful, beholden, grateful, obligated, duty-bound, accountable, bound, chargeable, hooked, liable, owing, responsible, bounden, owed
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.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.