Crossword clues for the word: IRRATIONAL The word IRRATIONAL has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for IRRATIONAL Showing 1 to 7 of 7 results Clue(s) Based on absurd fact Illogical Lacking mental clarity Like most numbers, if we’re being real Not governed by reason Not reasonable Utterly illogical