“Confident” means having a strong sense of self-assurance and belief in one's abilities. Some synonyms for “confident” are “self-assured”, “assured”, and “certain”.
“Self-assured” emphasizes a person's own sense of security and certainty. For example, “She walked into the room with a self-assured air.” This shows that she was confident in herself and her actions.
“Assured” suggests a sense of calm certainty. “He spoke in an assured tone.” Here, “assured” indicates that he was confident and sure of what he was saying.
“Certain” implies a definite knowledge or belief. “She was certain of her success.” This means that she was confident that she would succeed.
These synonyms can be used to add variety and nuance to your language when describing someone who is confident.