Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “ruthless”

See all translations

ruthless

adjective uk   /ˈruːθ.ləs/ us  
C2 not thinking or worrying about any pain caused to others; cruel: ruthless ambition a ruthless dictator Some people believe that to succeed in this world you have to be ruthless.
ruthlessly
adverb uk   /-li/ us  
She ruthlessly pursued her ambition, letting nothing get in her way.
ruthlessness
noun [U] uk   /-nəs/ us  
(Definition of ruthless from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of ruthless?
Add Cambridge dictionaries to your browser to your website

Definitions of “ruthless” in other dictionaries

Word of the Day

bad/hard/tough luck

said to express sympathy with someone when something bad has happened to them

Word of the Day

Think long and hard; the language of decisions

by Liz Walter,
January 28, 2015
One of the best ways (perhaps the best way) to improve your English is to learn how words go together in phrases, idioms, or other patterns such as verb/noun or adjective/noun pairs (often called ‘collocations’). This blog looks at some useful phrases and collocations connected with the subject of decisions, something we

Read More 

micro pig noun

January 26, 2015
an extremely small pig, bred to be a pet Micro pigs have become popular pets recently, with famous owners including Victoria Beckham, Paris Hilton and Olympic diver, Tom Daley.

Read More