1. lacking ardor or vigor or energy

- a spiritless reply to criticism

Similar word(s): dull, unenthusiastic, apathetic, bloodless, dispirited, listless, heartless, thin

2. evidencing little spirit or courage; overly submissive or compliant

Similar word(s): submissive, meek

Sentences with spiritless as an adjective:

- The team played a spiritless first half, just going through the motions. But the realization they were playing for their sick friend energized them for the second half.