painless
Death came quickly and painlessly.
They kill the animals painlessly.
The income tax is painlessly taken directly out of their wages.
SMART Vocabulary: related words and phrases Pain & painful
-racked
aches and pains
achy
agonizing
analgesia
be murder on somethingidiom
birth pangs
brain freeze
excruciating
grief
neuralgia
pain reliever
pang
prick
rawness
sciatic
sore
sting
stitch
throb
You can also find related words, phrases, and synonyms in the topics:
Easiness and simplicity