Crossword clues for the word: SURDS The word SURDS has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for SURDS Showing 1 to 6 of 6 results Clue(s) "Certain numbers, in math." "Irrational numbers, in math" Certain speech sounds. Irrational numbers. Voiceless consonants Voiceless sounds