Hesitate
/ˈhɛzɪteɪt/
verb
To stop or pause respecting decision or action; to be in suspense or uncertainty as to a determination.
“He hesitated whether to accept the offer or not; men often hesitate in forming a judgment.”
To stammer; to falter in speaking.
To utter with hesitation or to intimate by a reluctant manner.
Synonyms: balbucinate, balbutiate, falter, haw, hem, stammer, stutter, demur