Antonyms for the word "overesteeming" could include underestimating, undervaluing, disregarding, demeaning, belittling, disparaging, abusing, and insulting. These words represent the opposite sentiments of overesteeming or excessively elevating a person or thing, and instead illustrate the act of diminishing their worth or importance. For example, one who overestimates themselves may be considered narcissistic, while one who underestimates themselves may have low self-esteem. Therefore, to avoid the extremes of overesteeming or underestimating, it is useful to find balance in seeing oneself and others realistically, and recognizing individual strengths and weaknesses with a sense of humility and respect.