Having no ruth; cruel; pitiless.

Ruthless is a 1948 drama film directed by Edgar G. Ulmer and starring Zachary Scott and Louis Hayward. Tagline: Power ...

without mercy or pity; "an act of ruthless ferocity"; "a monster of remorseless cruelty"

"Ruthless" is the name of a hip-hop group from North St. Paul, MN. Members include M.C.