Boast/bəʊst/ Definition 1 of 3Pro Tip 1/3Excessive Pride Using 'boast' often implies too much pride, not just confidence. He boasted about winning the contest, but it sounded arrogant. Pro Tip 2/3Negative Impression 'Boast' may give a negative impression of the speaker to others. When she boasted about her salary, her friends felt uncomfortable. Pro Tip 3/3Not for Humility Avoid 'boast' if trying to appear humble or modest. Even with his achievements, he chose not to boast.