Dictionary.com
Thesaurus.com
Synonyms

wily

American  
[wahy-lee] / ˈwaɪ li /

adjective

wilier, wiliest
  1. full of, marked by, or proceeding from wiles; crafty; cunning.

    Synonyms:
    treacherous, deceitful, foxy, tricky, designing, sly, artful
    Antonyms:
    open, straightforward

wily British  
/ ˈwaɪlɪ /

adjective

  1. characterized by or proceeding from wiles; sly or crafty

"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

Derived Forms

Etymology

Origin of wily

Middle English word dating back to 1250–1300; see origin at wile, -y 1

Explanation

Did you fall for that wily door-to-door salesman's pitch? He must be very slick and tricky to have convinced you to buy a set of new tires, considering you don't have a car. How can you remember the meaning of the adjective wily? Just think about the old Warner Brothers Looney Tunes cartoons. Their aptly named cartoon character, Wile E. Coyote, got his name from a clever play on words. Wile E. is supposed to be cunning, crafty, and clever — in other words, wily. Wile E. is all those things, but unfortunately he was usually bested by that pesky roadrunner anyway. Meep. Meep.

Keep Reading on Vocabulary.com

Vocabulary lists containing wily

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.

Wily coyotes have adapted to urban life, finding city parks and golf courses to their liking.

From Slate • Sep. 5, 2025

Thursday: Wily Peralta, unlikely to make the rotation, looked solid in three innings against the New York Mets, limiting them to three hits, no runs and no walks.

From Washington Post • Mar. 20, 2023

Chad Kuhl and Wily Peralta, nonroster invitees to camp, have more big league experience if someone goes down.

From Washington Post • Feb. 28, 2023

Chelsea's Raheem Sterling volleyed home from five yards after Wily Boly had flicked a cross onto his own bar.

From BBC • Jan. 1, 2023

Grace Geer calls him Ralph the Wily when nobody hears.

From Tessa Wadsworth's Discipline A Story of the Development of a Young Girl's Life by Drinkwater, Jennie M.

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "wily" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com