hes ‧ i ‧ ta ‧ tion /ˌhezəˈteɪʃ ə n, ˌhezɪˈteɪʃ ə n/ BrE AmE noun [uncountable and countable]
when someone hesitates:
After some hesitation one of them began to speak.
without hesitation
He agreed without hesitation.
have no hesitation in doing something
I would have no hesitation in recommending Philip for the position.
a slight/brief/momentary etc hesitation
There was a slight hesitation in Jamie’s voice.