Ruthless
/rˈuθləs/
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Definition
(adj) Without pity or compassion; cruel, pitiless.
Sentence Examples
Those guys are ruthless, covering up their tracks like that after all their wrongdoing.
Among the manufacturers of so-called consumer electronics, there's ruthless, cut-throat competition.
CEFR Practice Quiz
The ____ businessman cut costs by laying off hundreds of workers without any warning.