To Scruple

1. (intransitive) To hesitate or be reluctant to act due to considerations of conscience or expedience.
2. (intransitive) To excite scruples in; to cause to scruple.
3. (transitive) To regard with suspicion; to question.
4. (intransitive, obsolete) To question the truth of (a fact, etc.); to doubt; to hesitate to believe, to question.