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A word or string in which no character in the reversed string matches the character at the same position in the original string. In other words, for a string of length n, a total antipalindrome satisfies the condition that for every index i (1 ≤ i ≤ n), character i ≠ character n − i + 1. It’s like the exact opposite of a palindrome—not even a single letter is allowed to line up with its mirror.
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