"How did I not know that?" Crossword Clue

Here is the answer for the crossword clue "How did I not know that?" . We have found 40 possible answers for this clue in our database. Among them, one solution stands out with a 98% match which has a length of 3 letters. We think the likely answer to this clue is DUH.

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Crossword Answer For "How did I not know that?":

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40 Potential Answers:

RankAnswerLengthSourceDate
98% DUH "How did I not know that?" (3)
10% TMI "I did NOT need to know that" (3) USA Today Oct 8, 2026
9% ITO "How was ___ know?" (3) New York Times Oct 25, 2026
9% SMARTS Know-how (6) The Atlantic Sep 6, 2026
9% OHOH "I know, I know!" (4) TV Sep 6, 2026
8% BEATSME "Heck if I know" (7) New York Times Oct 25, 2026
8% NOIDEA "I don't know!" (6) USA Today Oct 18, 2026
8% TADA "I did it!" (4) LA Times Daily Oct 15, 2026
8% OOH "I know the answer!" (3) Wall Street Journal Sep 8, 2026
8% YOURETELLINME "I know, right?!" (13) LA Times Daily Aug 22, 2026
"How did I not know that?" Crossword Clue
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We found 40 solutions for "How did I not know that?". The top solutions are determined by popularity, ratings and frequency of searches. The most likely answer for the clue is DUH.

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