How do you spell Scrupulous

Available Definitions:
1)  a. - Full ofscrupules; inclined to scruple; nicely doubtful; hesitating to determine or to act, from a fear of offending or of doing wrong.
2)  a. - Careful; cautious; exact; nice; as, scrupulous abstinence from labor; scrupulous performance of duties.
3)  a. - Given to making objections; captious.
4)  a. - Liable to be doubted; doubtful; nice.