conscience
noun
[ ˈkɒnʃ(ə)ns ]
• a person's moral sense of right and wrong, viewed as acting as a guide to one's behaviour.
• "he had a guilty conscience about his desires"
Similar:
sense of right and wrong,
sense of right,
moral sense,
still small voice,
inner voice,
voice within,
morals,
standards,
values,
principles,
ethics,
creed,
beliefs,
compunction,
scruples,
qualms,
Origin:
Middle English (also in the sense ‘inner thoughts or knowledge’): via Old French from Latin conscientia, from conscient- ‘being privy to’, from the verb conscire, from con- ‘with’ + scire ‘know’.
in conscience
• by any fair or reasonable standard.
• "how can we in all conscience justify the charging of fees for such a service?"