English word ruthless comes from a combination of English ruth (an archaic term for sorrow for the misery of another; pity) and -less (lacking/without something).
Ruthless detailed word origin explanation
|ruth || English (eng) ||(archaic) Sorrow for the misery of another; pity, compassion; mercy. [from 13th c.]. (now, _, rare) Repentance; regret; remorse. [from 13th c.]. (obsolete) Something which causes regret or sorrow; a pitiful sight. [13th-17th c.]. (obsolete) Sorrow; misery; distress. [...] |
|-less || English (eng) ||Lacking (something); without (something). |
|ruthless || English (eng) ||Without pity or compassion; cruel, pitiless. |
Words with the same origin as ruthless