1) Apathetic one 2) Gloomy gus 3) Gloomy type 4) Melancholiac 5) One in the dumps 6) One with a long sad face 7) Sad sort 8) Slow driver 9) Sour sort 10) Spiritless one 11) Sulking one 12) Sulking sort 13) Sulky one 14) Sullen one 15) Sullen sort Found on https://www.crosswordclues.com/clue/moper