Confidence is an essential trait that helps individuals navigate life with self-assurance and poise. For some, confidence may come naturally, while others may struggle with feelings of inadequacy, self-doubt, and uncertainty. Antonyms for "lacking confidence" include "self-assured," "confident," "self-confident," "self-reliant," "assured," "bold," "certain," "courageous," "decisive," "assertive," and "determined." These words all convey a sense of conviction, certainty, and belief in oneself. By recognizing and embracing these antonyms, individuals can work on developing their confidence, enhancing their sense of self-worth, and unleashing their full potential.