The past tense of painless is painless. Since painless is an adjective, it does not change in the past tense.
The opposite of painless is painful
An anagram for painless is spaniels.
Suicide is Painless Music by Johnny Mandel Lyrics by Mike Altman
Painless Parker died in 1951.
Painless Parker was born in 1871.
"The injection will be absolutely painless, Bill".
burn the coal in night, is a painless killer (human killer)
Painless - House - was created on 2009-01-19.
Parting Should Be Painless was created in 1984.
Painless Love was created on 1918-10-23.
The injection was painless and quick, leaving the patient relieved.