- without life; specif.,
- that never had life; inanimate
- that no longer has life; dead
- having no living beings: a lifeless planet
- dull; listless
See lifeless in American Heritage Dictionary 4
- Having no life; inanimate.
- Having lost life; dead. See Synonyms at dead.
- Not inhabited by living beings; not capable of sustaining life.
- Lacking vitality or animation; dull: a lifeless party.
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