Adjective
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not having the capacity to support life
"a lifeless planet"
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lacking animation or excitement or activity
"the party being dead we left early"
"it was a lifeless party until she arrived"
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destitute or having been emptied of life or living beings
"after the dance the littered and lifeless ballroom echoed hollowly"
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deprived of life
no longer living
"a lifeless body"