American Oxford Thesaurus
scruples
scruples plural noun he had no scruples about eavesdropping: qualms, compunction, pangs /twinges of conscience, hesitation, reservations, second thoughts, doubt (s ), misgivings, uneasiness, reluctance. CHOOSE THE RIGHT WORD See qualms . These notes show fine distinctions in meaning between closely related synonyms to help you find the best word.
Oxford Thesaurus
scruples
scruples plural noun 1 he had no scruples about eavesdropping: qualms, twinge of conscience, compunction, hesitation, reservations, second thoughts, doubt (s ), misgivings, pangs of conscience, uneasiness, reluctance. 2 I respect your scruples: principles, standards, values, morals, morality, moral concern, ethics, conscience, creed, beliefs.