Antonym of CONFIDENT

Answer: Option A

Confident : feeling or showing confidence in oneself or one's abilities or qualities.
Diffident : modest or shy because of a lack of self-confidence.
Timid : showing a lack of courage or confidence; easily frightened.
Reserved : slow to reveal emotion or opinions.
Shy : nervous or timid in the company of other people.

Antonym of Confident is Diffident