Crossword clues for the word: ONAFAST The word ONAFAST has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for ONAFAST Showing 1 to 3 of 3 results Clue(s) Observing Ramadan, say Observing Ramadan, say (3 wds.) Observing Yom Kippur, say