hesitate

verb (used without object), hes·i·tat·ed, hes·i·tat·ing.

1. to be reluctant or wait to act because of fear, indecision, or disinclination: She hesitated to take the job.
2. to have scruples or doubts; be unwilling: He hesitated to break the law.
3. to pause: I hesitated before reciting the next line.
4. to falter in speech; stammer: Embarrassment caused the speaker to hesitate.

verb (intr)

1. to hold back or be slow in acting; be uncertain
2. to be unwilling or reluctant (to do something)
3. to stammer or pause in speaking