Crossword clues for the word: CALLWAITING The word CALLWAITING has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for CALLWAITING Showing 1 to 7 of 7 results Clue(s) ... Music-playing service? ... """Can I put you on hold?"" feature" "Please hold" phone feature Busy-signal thwarter Phone service extra Phone service option Phone-owner's convenience