hesitation

HESITATION noun

uk/ˌhezɪˈteɪʃən/ us
[ C,U ] a pause before doing something, especially because you are nervous or not certain

нерешительность, сомнение
After a moment's hesitation , he unlocked the door. have no hesitation in doing sth
used to show you are very willing to do something because you know it is the right thing to do

делать что-либо, не колеблясь
He had no hesitation in signing for the team.