3393929668a0a065268e04db72f601418f61ab41a5089692abd261fa9b0eae87

(what|why|how) on earth

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What on earth is an exclamation used to express strong surprise, bewilderment, or disbelief at an unexpected situation. It appeared in English in the 18th century as a polite alternative to expressions invoking God or other strong language, using "earth" to keep the reaction safe and acceptable. People used it in everyday speech, literature, and newspapers to respond to shocking or confusing events. Today it is inoffensive, neutral, and widely understood, often signaling astonishment or incredulity in both casual and formal contexts.

英語での「 what on earth」の定義と意味

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