- not endowed with life; having no life; inanimate: lifeless matter.
- destitute of living things: a lifeless planet.
- deprived of life; dead: a battlefield strewn with lifeless bodies.
- without animation, liveliness, or spirit; dull; colorless; torpid: a lifeless performance of a play.
- insensible, as a person who has fainted.
- without life; inanimate; dead
- not sustaining living organisms
- having no vitality or animation
- unconscious
