Having confidence in oneself is essential for success in life, but there are times when self-doubt creeps in, and we need to find the right words to express it. An antonym for having confidence in is having doubts or uncertainty. When we lack confidence, we may feel hesitant, uncertain, or indecisive. Other antonyms include mistrust, distrust, skepticism, and suspicion. It's important to acknowledge these feelings and address them by seeking guidance from trusted sources, practicing self-care, and reminding ourselves of our past successes. By acknowledging our doubts and taking steps to address them, we can build greater confidence and achieve success in our goals.