What is the antonym of word confident?

The antonym of confident depends on the context in which you're using it. Here are a few possibilities:

General antonyms:

* Insecure

* Doubtful

* Uncertain

* Hesitant

* Timid

* Nervous

Specific antonyms:

* Uncertain (of ability): This is a good antonym when you're talking about someone who is not sure of their skills or knowledge.

* Unassured (of oneself): This emphasizes the lack of self-belief.

* Shy: This is a good antonym when you're talking about someone who is not comfortable in social situations.

* Apprehensive: This antonym implies fear or worry about the future.

It's important to choose the antonym that best fits the specific situation. For example, "He was confident in his abilities" could be contrasted with "He was uncertain about his abilities."