look up any word, like timebomb:
 
1.
without ruth; lack of ruth; no ruth
"william's iron fisted rule is just ruthless"
by destruco beast mcD October 06, 2012
 
2.
hardcore mother fucker that doesnt give a shit.
ronnie buffington is so ruthless that he shanked the mall cop and took the mall cops taser and zapped the shit outta him!
by dave March 26, 2003
 
3.
To be merciless. Cruel. Having no compassion.
She begged him, but he killed her anyway. Her and her baby. He's a ruthless man.
by Arelia May 31, 2006
 
4.
Having no compassion or pity; merciless
Man I can't believe that betriz is so ruthless... She would take all your money with no regret......
by Shiggidibug March 13, 2003
 
5.
people that dont give a fuck n do what the fuck they want when the fuck they want.
hey man i was mackin on this bitch and i just did some ruthless shit, kinda reminded me of kev, johnny n cam
by galactico April 18, 2007
 
6.
without ruth
john - "where's ruth?"

harry - "we had a big fight. now i'm ruthless. (sad face)"
by notis September 18, 2009
 
7.
someone without Ruth or someone who is harsh
And cruel, someone with no pitty
When I was simply standing around the girls
Ruthless hair hit me in the face.
by Amazing geek who loves pie October 21, 2011