1) Aging pro 2) Candidate for a comeback 3) Comeback attempter 4) Comeback seeker 5) Dinosaur 6) Dinosaur, so to speak 7) Ex of a sort 8) Exclusively Saxon word 9) Exclusively Anglo word 10) Faded film star 11) Faded type 12) Fading star 13) Fallen star 14) Former celebrity 15) Former great 16) Former leading light Found on https://www.crosswordclues.com/clue/has-been