hesitancy

1. The state or quality of being hesitant.
2. An instance of hesitating.

noun

The act of hesitating or state of being hesitant: hesitation, indecision, indecisiveness, irresoluteness, irresolution, pause, shilly-shally, tentativeness, timidity, timidness, to-and-fro, vacillation. See decide/hesitate.

Definition: reluctance
Antonyms: willingness

n

Definition: uncertainty
Antonyms: certainty, resolution