If you are hesitant about doing something, you do not do it quickly or immediately, usually because you are uncertain, embarrassed, or worried.
She was hesitant about coming forward with her story...
ADJ: oft ADJ about n, ADJ to-inf
• hesitancy
A trace of hesitancy showed in Dr. Stockton's eyes.
= reluctance
N-UNCOUNT
• hesitantly
'Would you do me a favour?' she asked hesitantly.
ADV: ADV with v