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Synonyms

guileless

American  
[gahyl-lis] / ˈgaɪl lɪs /

adjective

  1. free from deception or slyness; sincere and straightforward.

    No matter the situation, she was always transparent, guileless, and above any petty manipulative ploys.

  2. lacking awareness of the world and worldly things; innocent or naive.

    He agreed to this crafty proposal, being guileless, and soon found himself betrayed and in trouble.


guileless British  
/ ˈɡaɪllɪs /

adjective

  1. free from guile; ingenuous

"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

  • guilelessly adverb
  • guilelessness noun

Etymology

Origin of guileless

First recorded in 1720–30; guile + -less

Explanation

If you are guileless, you are not a liar; you are innocent, and you might be a touch on the gullible side. To be guileless is to be without guile. Guile is "deceit, duplicity and trickery." The young and uninitiated are the ones we call guileless, and they are the ones who often get stung by the more heartless among us. You might recall being a guileless freshman trying out for the school play, and being told by a veteran performer that it would be best to come to the audition for Our Town in a chicken costume, so you did.

Keep Reading on Vocabulary.com

Vocabulary lists containing guileless

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.

A protagonist like Claire—faced with ethical dilemmas and a backstory she’d like to keep secret—is usually surrounded by the guileless and the innocent.

From The Wall Street Journal • Mar. 10, 2026

“A party plaintiff’s misguided belief or guileless action in relying on a statement on which no reasonable person would rely is not justifiable reliance,” according to Vondran Legal, which has offices in California and Arizona.

From MarketWatch • Feb. 23, 2026

The orphaned 20-year-old niece of a London plumber, Cluny is guileless, openhearted and supremely self-confident.

From New York Times • May 4, 2024

Torres plays Alejandro, a guileless young dreamer who wants to design toys that teach children about the “joy of obstacles.”

From Los Angeles Times • Feb. 28, 2024

Loki looked as guileless as he could, which was amazingly guileless.

From "Norse Mythology" by Neil Gaiman