loon

noun

ˈlün How to pronounce loon (audio)
Definition of loonnext
1
as in eccentric
a person of odd or whimsical habits What kind of loon laughs at his own jokes when no one else is laughing?

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms
2
as in idiot
a stupid person The loons at the grocery store had put the potato chips at the bottom of the bag.

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of loon Tony nominee Marla Mindelle, who plays Céline, is an estimable loon — a loon with enviable comedic chops and glorious vocals. — Scott Hocker, TheWeek, 15 May 2026 The Ojibwe, a western Anishinaabe community in and around northern Wisconsin, refer to the April full moon as the boiling sap moon or the loon moon. — Caden Perry, jsonline.com, 31 Mar. 2026 Over the past five years, the major additions to United Village have been multiple parking lots, PK’s Playground and what is believed to be the world’s largest loon statue. — Frederick Melo, Twin Cities, 15 Mar. 2026 Rock Harbor to Daisy Farm Campground This trail almost entirely follows the coast for 7 miles, with a soundtrack of lapping waves, trilling loons, and the occasional outboard motor. — Robert Annis, Midwest Living, 7 June 2026 See All Example Sentences for loon
Recent Examples of Synonyms for loon
  1. eccentric
  2. moron
  3. character
  4. stupid
  5. kook
  6. prat
  7. wacko
  8. nutter
Noun
  • With its loose ends and digressions, Dream Me a Dream stays true to those idiosyncratic instincts while retaining enough of the welcoming glow of Dance of Love to make this an affecting farewell from an endearing eccentric.
    — Stephen Thomas Erlewine, Pitchfork, 22 June 2026
  • The eccentric cuz is quick to try and help Bobby solve problems, which often gets him into trouble, but ultimately pushes him out of his shell.
    — Skyler Trepel, Entertainment Weekly, 20 June 2026
Definition of eccentric
Noun
  • Mantzoukas was willing to look like a maniac and a moron in equal measure.
    — Roxana Hadadi, Vulture, 17 June 2026
  • Lluís then calls Puig Antich a moron.
    — Colm Tóibín, The Atlantic, 14 Mar. 2026
Definition of moron
Noun
  • There was a small card with a graphic that pictured Wiley walking in the middle of Bluey and Bingo, two characters from the show.
    — Thao Nguyen, USA Today, 2 July 2026
  • Her refusal to sugarcoat the interior and exterior lives of her characters, whether enslaved or traumatized by the past — by events in American history — was purposeful.
    — Leigh Haber, Los Angeles Times, 2 July 2026
Definition of character
Noun
  • My dad has always said the lottery is a tax on the stupid.
    — Alex Crippen, CNBC, 4 Apr. 2026
  • Problem is, even people who know baseball don’t know baseball, which makes betting on baseball stupid.
    — Nick Canepa, San Diego Union-Tribune, 7 Mar. 2026
Definition of stupid
Noun
  • Halaena can tell that something’s up with mummy, but that kook’s never been too concerned with matters of court.
    — Amanda Whiting, Vulture, 22 June 2026
  • After Kent’s resignation, Republican hawks denounced him as a kook and a traitor to the cause, without touching on the delicate question of why Trump appointed such a disreputable figure in the first place.
    — Jonathan Chait, The Atlantic, 25 Mar. 2026
Definition of kook
Noun
  • There are big box store flash mobs, horses, prat falls and, of course, lots and lots of screaming.
    — Kelly Lawler, USA Today, 9 Apr. 2026
  • At times Javed’s insistence on reciting lyrics to other people becomes irritating (his girlfriend, a white anti-Thatcher campaigner who did not feature in the book, tells him off for being a prat).
    — J.T., The Economist, 15 Aug. 2019
Definition of prat
Noun
  • People who see ghosts tend to see the same ghost wafting down the same staircase, but none of the characters populating Leo’s wacko hallucinations have returned for a repeat perfor-mance.
    — Literary Hub, Literary Hub, 10 Apr. 2026
  • This wacko crew was one of the greatest things in the history of television.
    — Jordan Hoffman, EW.com, 14 Aug. 2025
Definition of wacko
Noun
  • Whit’s Frozen Custard is known for its flavor of the day calendar, with rich custards running the decadent range from fluffer nutter cookie, carrot cake, and mint cookies ‘n cream to Biscoff cookie butter and banana nut bread.
    — Terry Ward, Travel + Leisure, 9 May 2026
  • Lloyd Hansen is his exit strategy, and this nutter will stop at nothing to snuff Six and steal the drive.
    — Peter Debruge, Variety, 14 July 2022
Definition of nutter

Browse Nearby Words

looms
loon
loonies
See all Nearby Words

Podcast

Theme music by Joshua Stamper ©2006 New Jerusalem Music/ASCAP

Cite this Entry

“Loon.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/loon. Accessed 7 Jul. 2026.

Copy Citation

More from Merriam-Webster on loon

Nglish: Translation of loon for Spanish Speakers

Britannica.com: Encyclopedia article about loon

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Popular in Grammar & Usage

See More

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Commonly Misspelled Words

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)
See More

Popular in Wordplay

See More

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List

One-Word Oxymorons: Bittersweet, Spendthrift, and More

Ten Words Ending with a Silent ‘T’

12 Lovely and Unusual Words for the Natural World
See More

Popular

See More

Is that lie 'bald-faced' or 'bold-faced'?

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
hangman letters and game
Hangman Lightning Round Figure out which word fits in the blanks.
See All