The Oxford Thesaurus An A-Z Dictionary of Synonyms - scruple n.

1) compunction, qualm, reluctance, misgiving, second thoughts, doubt, (twinge of) conscience, hesitation, uneasiness, discomfort, squeamishness: Peter hadn't the slightest scruple about taking the money from his aunt. --v. 2) pause, falter, hesitate, vacillate, have doubts or compunction (about) , demur, waver, shrink from or at, have misgivings or qualms (about or over) , be loath or loth (to) , think twice (about) , stick at, be reluctant, balk (at) , have scruples (about) : Susan didn't scruple for a moment about keeping the money she found in the street.