Noun

• S: (n) scruple (a unit of apothecary weight equal to 20 grains)
• S: (n) scruple, qualm, misgiving (uneasiness about the fitness of an action)
• S: (n) scruple (an ethical or moral principle that inhibits action)

Verb

• S: (v) scruple (hesitate on moral grounds) "The man scrupled to perjure himself"
• S: (v) scruple (raise scruples) "He lied and did not even scruple about it"
• S: (v) scruple (have doubts about)