bloodless

adjectives

destitute of blood or apparently so
"the bloodless carcass of my Hector sold"- John Dryden
free from blood or bloodshed
"bloodless surgery"; "a bloodless coup"
antonym
is similar to
achieved without bloodshed
"an unbloody transfer of power"
without vigor or zest or energy
"an insipid and bloodless young man"
is similar to
lacking ardor or vigor or energy
"a spiritless reply to criticism"
devoid of human emotion or feeling
"charts of bloodless economic indicators"
is similar to
not human; not belonging to or produced by or appropriate to human beings
"nonhuman primates such as chimpanzees"
anemic looking from illness or emotion
"a face turned ashen"; "the invalid's blanched cheeks"; "tried to speak with bloodless lips"; "a face livid with shock"; "lips...livid with the hue of death"- Mary W. Shelley; "lips white with terror"; "a face white with rage"