moral sense mo·ral·sense uncommon noun 1. motivation deriving logically from ethical or moral principles that govern a person''s thoughts and actions Synonymsconsciencescruplesmoral sensesense of right and wrong Related words Broader terms ethical motive Narrower terms superegowee small voicesense of shame WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.