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Synonyms

disloyal

American  
[dis-loi-uhl] / dɪsˈlɔɪ əl /

adjective

  1. false to one's obligations or allegiances; not loyal; faithless; treacherous.

    Synonyms:
    treasonable, traitorous, perfidious, unfaithful

disloyal British  
/ dɪsˈlɔɪəl /

adjective

  1. not loyal or faithful; deserting one's allegiance or duty

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of disloyal

1470–80; < Middle French desloial, Old French desleal, equivalent to des- dis- 1 + leal loyal

Explanation

If you're disloyal, you're not faithful or trustworthy — you can't be depended on by those who put their trust in you. It would be disloyal to join in with a group of people gossiping about your best friend. It's disloyal when a country violates a signed treaty, and it's disloyal for a citizen to spy for a foreign state against its own government. But it's also disloyal to betray the trust of someone in your life. A disloyal sibling tattles on his brothers and sisters, and a disloyal friend won't keep your secrets. This adjective comes from the Old French desloial, "treacherous or deceitful," which adds the prefix des-, "the opposite of," to loial, "faithful."

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Vocabulary lists containing disloyal

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The book, "Disloyal: A Memoir" topped the New York Times' hardcover nonfiction best-seller list in September 2020.

From Reuters • Apr. 24, 2023

“I have been described as a corrupt man. Greedy for money. Disloyal to the pope. Concerned only with the welfare of my family,” Becciu told the court Thursday.

From Seattle Times • Mar. 17, 2022

It was something that Cohen said he included in his 2020 book "Disloyal," but appeared to go largely unnoticed.

From Salon • Jun. 16, 2021

He cooperated with investigators while the 45th president was still in office and published a book, Disloyal, while completing a three-year sentence at home in New York.

From The Guardian • Feb. 8, 2021

Disloyal forces and counsels were increasing in the great centres at the North, and especially in New York City.

From An Original Belle by Roe, Edward Payson