Under bad manners, as under graver faults, lies very commonly an overestimate of our special inpiduality, as distinguished from our generic humanity. [Oliver W. Holmes, "The Professor at the Breakfast Table," 1858]
Earlier it meant "moral character" (early 13c.).词根词缀： over-过分,在…上 + estimate评估
该词的英语词源请访问趣词词源英文版：overestimate 词源，overestimate 含义。
over-,超过，过度，estimate,估计。