Crossword clues for the word: THWACK The word THWACK has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for THWACK Showing 1 to 8 of 8 results Clue(s) "Smack with a book, e.g." Hard blow Hit with a magazine, say Hit with a paddle Mega-hit? Sharp blow Sharp impact sound Sound of a sharp blow