conscience
1. [ noun ] motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions
Synonyms: moral_sense sense_of_right_and_wrong scruples
Related terms: ethical_motive wee_small_voice sense_of_shame superego
2. [ noun ] conformity to one's own sense of right conduct
Examples:

: "a person of unflagging conscience"

Related terms: morality unconscientiousness conscientiousness
3. [ noun ] a feeling of shame when you do something immoral
Examples:

"he has no conscience about his cruelty"

Related terms: shame
Similar spelling:   conscientious
  consent
  consonance
  consentient
  consensus
  conscionable
  consenting
  consentaneous
  consensual