Lightest known substance Crossword Clue

Here is the answer for the crossword clue Lightest known substance . 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 8 letters. We think the likely answer to this clue is HYDROGEN.

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Crossword Answer For Lightest known substance:

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40 Potential Answers:

RankAnswerLengthSourceDate
98% HYDROGEN Lightest known substance (8)
3% BALEEN Plankton-filtering substance also known as whalebone (6) The Times Specialist Sep 22, 2025
2% PAPER Substance for writing on (5) (5) Puzzler Nov 23, 2025
2% OBSCURE Not widely known (7) USA Today Nov 22, 2025
2% AIR Make known (3) Wall Street Journal Nov 22, 2025
2% ACID Corrosive substance (4) Universal Nov 20, 2025
2% SYRUP Sweet sticky substance (5) Puzzler Backwords Nov 20, 2025
2% LYES Caustic substances (4) Universal Nov 16, 2025
2% GOO Sticky substance (3)
2% HADI "__ but known!" (4) Newsday Nov 12, 2025
Lightest known substance Crossword Clue
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We found 40 solutions for Lightest known substance. The top solutions are determined by popularity, ratings and frequency of searches. The most likely answer for the clue is HYDROGEN.

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