Crossword clues for the word: COSTLY The word COSTLY has appeared as an answer to at least 12 crossword clues on different crossword puzzles. Crossword clues for COSTLY Showing 1 to 12 of 12 results Clue(s) "Dear, in a way" Breaking the bank Budget-busting Expensive High in price High-priced Like a mistake that's going to hurt you Like a Rolls, say Like serious mistakes Not at all cheap Not budget-friendly Steep arch around ends of this ancient cathedral