loon

L1O1O1N1
/ˈluːn/

noun

A crazy or deranged person; a lunatic.

Less commonScrabble 4

Meanings

loon1

nounloon (plural loons)

plural loons

  1. slangA crazy or deranged person; a lunatic.

    What's it like to be a loon? / I liken it to a balloon

    1971, Marc Bolan, “Cosmic Dancer”, in Electric Warrior, performed by T. Rex
    1 more example

    An electric fire came next, followed by an umbrella and then a colander. "This bowl will carry no water," he muttered. "Some loon hath pierced it with holes."

    1971, Richard Carpenter, Catweazle and the Magic Zodiac, Harmondsworth: Puffin Books, page 67

    Synonyms: lunatic, psycho, wacko

  2. obsoleteAn idler, a lout.

    The diuell damne thee blacke, thou cream-fac'd Loone: Where got'ſt thou that Gooſe-looke.

    c. 1606 (date written), William Shakespeare, “The Tragedie of Macbeth”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act V, scene iii], page 149
  3. ScotlandUlsterA boy, a lad.
  4. ScotlandA harlot; mistress.
  5. ScotlandA simpleton.
  6. IrelandhistoricalAn English soldier of an expeditionary army in Ireland.
  7. engineeringA round area of pavement that protrudes from one side of a road to accommodate turning vehicles with a wide turning circle.

    Synonyms: bulb-out

  8. abbreviationclippingClipping of balloon.

loon2

nounloon (plural loons)

plural loons

  1. CanadaUSAny of various birds, of the order Gaviiformes, of North America and Europe that dive for fish and have a short tail, webbed feet and a yodeling cry.

    [O]h, yes! the loon does shriek dreadfully - particularly when there's fine rain […]

    1886, Peter Christen Asbjørnsen, translated by H. L. Brækstad, Folk and Fairy Tales, page 286
    4 more examples

    The Loone is an ill ſhap'd thing like a Cormorant; but that he can neyther goe nor flye; he maketh a noiſe ſometimes like a Sovvgelders horne.

    1634, William Wood, “Of the Birds and Fowles both of Land and Water”, in New Englands Prospect. A True, Lively, and Experimentall Description of that Part of America, Commonly Called New England; […], London: […] Tho[mas] Cotes, for Iohn Bellamie, […], →OCLC, 1st part, page 31

    He came again to her and she said: ‘Run swifter than the deer, be more cunning than the beaver, dive deeper than the loon.’

    1903, Zane Grey, Betty Zane, New York, N.Y.: Grosset & Dunlap Publishers, →OCLC

    And I listened for a voice;— / But my heart was all I heard; / Not a screech-owl, not a loon, / Not a tree-toad said a word.

    1921, Edna St. Vincent Millay, “The Blue-Flag in the Bog”, in Second April

    Every so often there was a new animal in the park. We all remembered, for example, when the first loon arrived. The ducks were so happy to have a bird nuttier than themselves.

    2023, Dave Eggers, illustrated by Shawn Harris, The Eyes and the Impossible, pages 136-137

    Synonyms: diver

Loon3

proper noun

Synonyms & antonyms

nounA crazy or deranged person; a lunatic.

nounA round area of pavement that protrudes from one side of a road to accommodate turning vehicles with a wide turning circle.

Similar

nounAny of various birds, of the order Gaviiformes, of North America and Europe that dive for fish and have a short tail, webbed feet and a yodeling cry.

Similar

More synonyms by meaning

nounlarge somewhat primitive fish-eating diving bird of the Northern Hemisphere having webbed feet placed far back; related to the grebes

Similar
Broader
gaviiform seabird

nouna person with confused ideas; incapable of serious thought

Similar
Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

loon · noun

  1. Middle Englishlouen
  2. Englishloon

From Middle English louen, lowen (“rascal; rogue”), probably of Middle Dutch or Middle Low German origin. Compare Dutch loen (“simpleton”). Or, related to etymology 2, due to the bird's loud cry. Folk etymology associates it slang-wise with lunatic, though the latter may have influenced it; see loony.

Full word history & related roots →

loon · noun

  1. Proto-Indo-European*leh₂-
  2. Old Norselómr“loon”
  3. North Germanic
  4. Englishloon

Of North Germanic origin, from Old Norse lómr (“loon”), ultimately imitative of the bird's cry, particularly when it's in danger. Distantly related to lament, probably sharing Proto-Indo-European *leh₂- (expressive root).

Full word history & related roots →

Translations

Basque pulunpari
  • pulunparibird of order Gaviiformes
Bulgarian откачалник, откачалка
  • откачалник (otkačalnik)a crazy person
  • откачалка (otkačalka)a crazy person
  • безделник (bezdelnik)idler
  • кибик (kibik)idler
  • гмурец (gmurec)bird of order Gaviiformes
Catalan calàbria
  • calàbriabird of order Gaviiformes
Chinese Mandarin 潛鳥 /潜鸟
  • 潛鳥 /潜鸟 (qiánniǎo)bird of order Gaviiformes
Czech cvok, potáplice
  • cvoka crazy person
  • potáplicebird of order Gaviiformes
Danish lom
  • lombird of order Gaviiformes
Dutch gek, getikte
  • geka crazy person
  • getiktea crazy person
  • duikerbird of order Gaviiformes
  • zeeduikerbird of order Gaviiformes
Esperanto granda kolimbo
  • granda kolimbobird of order Gaviiformes
Estonian kaur
  • kaurbird of order Gaviiformes
Finnish sekopää, hullu
  • sekopääa crazy person
  • hullua crazy person
  • sekoa crazy person
  • lusmuidler
  • kuikkabird of order Gaviiformes
French fou, plongeon
  • foua crazy person
  • plongeonbird of order Gaviiformes
  • huardbird of order Gaviiformes
German Bekloppter, Verrückter
  • Beklopptera crazy person
  • Verrücktera crazy person
  • Irrera crazy person
  • Spinnera crazy person
  • Traumtänzeridler
  • Faulenzeridler
  • Seetaucherbird of order Gaviiformes
Greek παλαβός
  • παλαβός (palavós)a crazy person
Hungarian búvármadár
  • búvármadárbird of order Gaviiformes
Indonesian gila, loon
  • gilaa crazy person
  • loonbird of order Gaviiformes
Irish lóma, foitheach
  • lómabird of order Gaviiformes
  • foitheachbird of order Gaviiformes
Italian matto, scemo
  • mattoa crazy person
  • scemoa crazy person
  • stoltoa crazy person
  • fannullonea crazy person
  • strolagabird of order Gaviiformes
Japanese 嘴黒阿比
  • 嘴黒阿比 (hashiguroabi)bird of order Gaviiformes
Korean 아비
  • 아비 (abi)bird of order Gaviiformes
Lithuanian naras
  • narasbird of order Gaviiformes
Norwegian Bokmål lom
  • lombird of order Gaviiformes
Polish nur
  • nurbird of order Gaviiformes
Portuguese doido, louco
  • doidoa crazy person
  • loucoa crazy person
  • malucoa crazy person
  • mobelhabird of order Gaviiformes
  • mergulhãobird of order Gaviiformes
Romanian cufundar, bodârlău
  • cufundarbird of order Gaviiformes
  • bodârlăubird of order Gaviiformes
  • corcodelbird of order Gaviiformes
Russian безумец, гага́ра
  • безумец (bezumec)a crazy person
  • гага́ра (gagára)bird of order Gaviiformes
Scottish Gaelic learga
  • leargabird of order Gaviiformes
Slovak potáplica
  • potáplicabird of order Gaviiformes
Spanish lunático, colimbo
  • lunáticoa crazy person
  • colimbobird of order Gaviiformes
Swedish lom
  • lombird of order Gaviiformes
Turkish dalgıç, dalgıçkuşu
  • dalgıçbird of order Gaviiformes
  • dalgıçkuşubird of order Gaviiformes
Ukrainian гагара
  • гагара (hahara)bird of order Gaviiformes
Welsh trochydd
  • trochyddbird of order Gaviiformes

Rhymes & wordplay

Rhymes with loon

All rhymes →

Anagrams

Cite this entry
APA

loon. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/loon

MLA

“loon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/loon. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “loon,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/loon.

Source: loon on Wiktionary, CC BY-SA 4.0.