n. 25B6; plural noun he had no scruples about eavesdropping : QUALMS, compunction, pangs/twinges of conscience, hesitation, reservations, second thoughts, doubt(s), misgivings, uneasiness, reluctance.
SCRUPLES
Meaning of SCRUPLES in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012