The word "hesitancy" refers to the state or quality of being slow or uncertain when doing or saying something. It signifies a lack of promptness or decisiveness due to uncertainty, embarrassment, or reluctance.
hesi·tancy/ˈhezɪtənsi; NAmEˈhezɪtənsi/noun[uncountable ]the state or quality of being slow or uncertain in doing or saying sth 犹豫;踌躇;迟疑不决◆I noticed a certain hesitancy in his voice.我注意到他的声音有点犹豫。hesitancyhesitancieshesi·tancy/ˈhezɪtənsi; NAmEˈhezɪtənsi/