ruthless /ˈruːθləs/

Origin

From Middle English reuþles, from reuþe (pity, compassion) + -less. First recorded in the 15th century.

Meanings

1. Having no pity or compassion; cruel; merciless

   • "The ruthless dictator showed no mercy to his opponents."
   • "She was ruthless in her pursuit of success."

2. Determined and relentless, without concern for others

   • "The ruthless businessman destroyed his competitors."
   • "The detective was ruthless in his investigation of the crime."

Word Forms

• Adjective: ruthless
• Adverb: ruthlessly
• Noun: ruthlessness

Synonyms

• merciless
• pitiless
• cruel
• heartless
• remorseless
• unforgiving
• brutal
• cold-blooded

Antonyms

• compassionate
• merciful
• kind
• sympathetic
• lenient

Memory Tricks

1. Break it down: ruth (compassion) + less = without compassion
2. Think of "ruth" as "rue" (regret) - someone ruthless never feels regret for their actions
3. Historical connection: Remember Genghis Khan, often described as a ruthless conqueror

Usage Notes

• Often used in business, politics, and competitive contexts
• Generally carries a negative connotation
• Can sometimes be used positively to describe determined efficiency, especially in business contexts