Complete or total, often used to describe something negative
Examples:
Her arrant disregard for the rules shocked us all.The politician was an arrant deceiver, fooling everyone.An arrant fool, he trusted everyone without question.
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Antonyms:
Errant
Acting in a way that is not correct or expected; straying from the proper path
Examples:
The errant knight wandered the countryside in search of adventure.Her errant decision to invest all her savings soon led to regret.Despite an errant throw, the quarterback managed to win the game.
Synonyms:
Antonyms:
Ways to tell them apart:
Errant often means straying from the proper course, like an errant knight who strays from his duties.
Arrant is always used as an intensifier, mostly in negative contexts, like arrant nonsense.
Remember errant with error, as it often implies a wandering or mistake.
Think of arrant with utter or complete to emphasize the thoroughness of something negative.
Errant has a neutral or sometimes positive connotation, whereas arrant is usually negative.