Difference between Apathetic and Spiritless

What is the difference between Apathetic and Spiritless?

Apathetic as an adjective is void of feeling; not susceptible of deep emotion; passionless; indifferent. while Spiritless as an adjective is lacking energy, drive, motivation or emotion. enervated.

We hope you now know whether to use Apathetic or Spiritless in your sentence.