The word conceitless means humble or modest, and its antonyms are words that connote pride, arrogance, or haughtiness. Some common antonyms for conceitless include egotistical, vain, narcissistic, conceited, egocentric, haughty, pompous, and boastful. These words describe people who are self-centered, self-absorbed, and overly proud of their achievements, attributes, or possessions. Such people often believe they are better than others and tend to show off or act superior in social settings. In contrast, someone who is conceitless is modest, unassuming, and has a healthy sense of self-worth without the need for excessive admiration or attention.