The word "ruthless" is middle-English in origin, referring to the biblical story of Ruth; the theme of the story being kindness, love, and redemption.
To say someone is ruthless is to literally say that that person is unlike Ruth; cruel, unforgiving, and unloving. (Ruth+less)
"ruthless" early 14c., from reuthe 'pity, compassion' (late 12c.), formed from reuwen 'to rue' (see rue (v.)) on the model of true/truth, etc. Ruthful (early 13c.) has fallen from use since late 17c. except as a deliberate archaism."
the cops just captured a ruthless killer
The big boys were ruthless (mean) to the little boy.
* The ruthless supervisor never stopped searching for tiny or unhelpful answers.
rücksichtlos
Ruthless
Is the person who don't have pity or mercy. The word "ruth"means or meant (it hasn't been used much recently and so might be considered to be obsolete since the late nineteenth century) pity, mercy and compassion.
Ruthless
The word mercy does not come from a Roman god. Its Latin word origin is merc, merxi, meaning (with some irony) "price paid, wages." Mercenary and merchandise are modern words formed by this.
Ruthless
The core word is 'rue', or to regret. So ruthless is without regret, and rueful or ruefully is with regret.
the origin is where the word came from but the specific origin of the word ballot is latin root word.
A synonym for the word vindictive is revengeful or vengeful.