1) Abject 2) Amort 3) Apathetic 4) Arid 5) Bloodless 6) Cowardly 7) Dispirited 8) Dull 9) Exanimate 10) Inanimate 11) Jaded 12) Languid 13) Leaden 14) Nerveless 15) Pathetic 16) Submissive 17) Unenthusiastic 18) Vapid 1) Apathetic 2) Bloodless 3) Dispirited 4) Dull 5) Heartless 6) Listless 7) Thin 8) Unenthusiastic 
• (a.) Destitute of vigor; wanting life, courage, or fire. • (a.) Having no breath; extinct; dead. • (a.) Destitute of spirit; wanting animation; wanting cheerfulness; dejected; depressed.
Spir'it·less adjective 1. Destitute of spirit; wanting animation; wanting cheerfulness; dejected; depressed. 2. Destitute of vigor; wanting life, courage, or fire. « A men so faint, so spiritless , So dull, so dead in lock, so woebegone.» Shak. 3. ...
[adj] - lacking ardor or vigor or energy 2. [adj] - lacking spirit
adjective lacking ardor or vigor or energy; `a spiritless reply to criticism`