1. to have an excessively high opinion of oneself; to be arrogant or presumptuous
Usage: third person singular present tense of 'overween'; formal or literary

Examples

• He overweens about his abilities and rarely listens to criticism.
• She overweens in her judgment of others' intelligence.
• The candidate overweens regarding his chances of winning the election.
• They overween about their company's market position without considering competitors.
• He overweens so much that he refuses to ask for help.