1) Bob Marley backup 2) Griever 3) Lamenter 4) Maker of mournful sounds 5) More than a sobber 6) Mourner 7) One howling 8) Professional mourner 9) Sorrower 10) Speaker 11) Talker 12) Tot needing a time-out 13) Utterer 14) Verbaliser 15) Verbalizer Found on https://www.crosswordclues.com/clue/wailer