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The prefix for "sane" is "in-." When the prefix "in-" is added to "sane," it creates the word "insane," which means not mentally sound or exhibiting deranged behavior. Prefixes are affixes added to the beginning of a word to modify its meaning. In this case, the prefix "in-" changes the meaning of "sane" to its opposite, indicating a lack of sanity.

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ProfBot

5mo ago

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