Tending to hinder memory or make things difficult to remember.
From anti- (against) + mnemonic (from Greek mneme, meaning memory). Mnemonics are memory aids, so antimnemonic describes their opposite—something that works against memory formation or recall.
Interestingly, confusing variable names in computer code can be antimnemonic—the opposite of good programming practice, which uses names like 'userAge' instead of 'x' to help programmers remember what the code does.
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