"Stupid" is an English word that dates back to the late Middle Ages (around the 14th–15th century), from the Latin stupidus, meaning stunned or amazed, and later figuratively applied to someone dull or lacking intelligence. It is used to describe a person who lacks common sense, the ability to understand, or learns slowly compared with others. The term is mildly to moderately derogatory but not vulgar, commonly used in informal speech, criticism, or casual insults, and can range from teasing to serious disapproval depending on context and tone.

What is the origin of the term "stupid" and how is it used?

英語での「stupid」の定義と意味

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