Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- adv. Whether desired or not: After her boss fell sick, she willy-nilly found herself directing the project.
- adv. Without order or plan; haphazardly.
- adj. Being or occurring whether desired or not: willy-nilly cooperation.
- adj. Disordered; haphazard: willy-nilly zoning laws.
Century Dictionary and Cyclopedia
- Will he or will he not; will ye or will ye not; willing or unwilling. See nill, will
- Vacillating; shilly-shallying.
- Also nilly-willy.
Wiktionary
- adv. Whether desired or not.
- adv. idiomatic Without regard for consequences or the will of those affected.
- adv. Seemingly at random, haphazardly
WordNet 3.0
- adv. without having a choice
- adv. in a random manner
Etymologies
- Originally ‘will he, nill he’ or ‘will ye, nill ye’, meaning ‘be he willing, be he unwilling’; see will, nill. (Wiktionary)
- Alteration of will ye (or he), nill ye (or he), be you (or he) willing, be you (or he) unwilling. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“Then they proceed to throw the name around willy-nilly, with Rudolph mixing in "prosecco.”
“When you go down this road and you start to just willy-nilly - as I believe President Carter has - throwing race out there, you diminish real instances of racism that needs to be addressed.”
“Constitutional head of all military in the US (and a civilian for a reason) ... should just let the military do whatever it wants willy-nilly.”
“He lay on the floor in a loose heap, rolling willy-nilly with every roll of the Elsinore.”
“So long as he walked four miles an hour, he pumped that blood, willy-nilly, to the surface; but now it ebbed away and sank down into the recesses of his body.”
“He abruptly ceased, for at that moment, to enforce his remark, he had placed his hand on Planchette, and at that moment his hand had been seized, as by a paroxysm, and sent dashing, willy-nilly, across the paper, writing as the hand of an angry person would write.”
“The central organizing principle of every single street in America is that people will not start pushing each other, willy-nilly, into traffic.”
“The missions and objectives were never clearly defined, and the self-parodying "search for WMD" in Iraq (lampooned by the president himself at a subsequent press dinner) was a willy-nilly adventure in comic relief -- to wit, Donald Rumsfeld's classic remark that "we know where they are: they're in the area around Tikrit and Baghdad and east, west, south, and north somewhat.”
The Huffington Post: Randall Amster: WikiLessons: War Is a Joke, But It Isn't Funny
“It gives us a plausible look at time travel and its potential consequences without having characters popping around through time changing events willy-nilly with no consideration for logic or continuity.”
20 « March « 2009 « Axiom's Edge Science Fiction and Fantasy
“When we arrest people who have hard drug problems, we need to rely much more on things like coerced abstinence from drugs and much less on willy-nilly throwing people into jail.”
Matthew Yglesias » By Request: Your Crime Control Policy On Drugs
Lists
These user-created lists contain the word ‘willy-nilly’.
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Reduples
Go for it, brothers and sisters! I personally have been suffering long for lack of an open reduplicatives list
happy clappy, bribble-brabble, diddle-daddle, hugger-mugger, kikiriki, Bora-Bora, mahi-mahi, jingle-jangle, knick-knack paddy..., chit-chat, bon-bon, clapperclaw and 292 more...
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Here and Now
Words related to the mental state of "being in the present in the moment".
improvisation, nolens volens, extempore, autoschediastic, in medias res, willy-nilly, egersis, immanence, nunc pro tunc, spontaneity, observant, concentration and 55 more...
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FUN - bogus definitions
Find the words (left) for the definitions below
- the person upon whom one coughs at
- appalled over how much weight you have gained
- to give up all hope of ever having a flat st...oyster, negligent, Pokemon, flatulance, lymph, rectitude, flabbergasted, willy-nilly, abdicate, coffee, gargoyle, esplanade and 4 more...
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Choi inspired
Fun words my friend loves and others I introduced to him.
Namby-pamby, Niminy piminy, Nitpick, Nit-wit, Piggly-wiggly, Ping-pong, Pitter-patter, Raggle-taggle, Riff-raff, zoot suit, zig-zag, wishy-washy and 73 more...
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known words
words wot i already knew
antisyzygy, calenture, shill, saudade, sehnsucht, squonk, steganographic, anomie, wiggy, grok, hermeneutics, agrise and 206 more...
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jagosaurus's favorites
Words I like mostly because of the way they sound and feel.
ticonderoga, petulance, snark, estimable, chickahominy, feline, gezellig, gneiss, shit, willy-nilly, shelter, coda and 366 more...
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Double Trouble
Reduplicatives and more.
splish-splash, hip-hop, kit-kat, dingaling, hugger-mugger, even-steven, tit for tat, higgledy-piggledy, dilly-dally, boogie-woogie, knick-knack, mai tai and 131 more...
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sionnach's Words
contumely, fomite, holmgang, poltroon, eleemosynary, obsidian, nugatory, grindcore, felch, recrudescent, pyx, parenteral and 3271 more...
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Words of Whimsy & Grace
abecedary, addendum, ampersand, anachronism, avuncular, balderdash, barnacle, befuddle, behemoth, bejeebers, blabbermouth, blatherskite and 465 more...
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tez's Words
tain, curlicue, eidolon, exoteric, puissant, ragamuffin, insouciant, yarrow, taciturn, mundane, vomitorium, tenebre and 140 more...
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oddball
wackadoodlery.
( personal list )
related (from me):
http://www.wordnik.com/lists/onomatopoeias--1
bric-a-brac, succotash, humbucker, skedaddle, scallywag, sassafras, gadzooks, humdinger, hoity-toity, wishy-washy, namby-pamby, ding dong and 436 more...
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They Roll Off The Tongue
Words that are just fun to say. Entirely subjective, but I like 'em regardless. A complement to the list They Stumble Off The Tongue.
verisimilitude, parsimonious, soliloquy, insipid, ontological, plentifully, je ne sais quoi, misanthropic, bourgeoisie, parallelable, inclemency, frigidity and 159 more...
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Hocus-pocus, I see a crocus!
Reduplicatives
willy-nilly, higgledy-piggledy, harum-scarum, argy-bargy, boogie woogie, hanky panky, itsy-bitsy, helter-skelter, lovey-dovey, wishy-washy, namby-pamby, niminy-piminy and 95 more...
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unpack your adjectives
and adverbs
walrusine, slipshod, bemused, inscrutable, bombastic, cattywampus, copacetic, famished, crackpot, flailsome, lugubrious, scalesome and 102 more...
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OK
One word from each of Omar Khayyam's rubaiyat as translated by Edward FitzGerald (1st edition)
awake, liquor, tavern, suspire, ruby, incarnadine, cup, blossom, forgot, herbage, verse, drum and 63 more...
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This Higgledy-Piggledy Raggle-Taggle ...
flimflam, higgledy-piggledy, raggle-taggle, heebie-jeebies, bric-a-brac, tip-top, holus-bolus, hocus-pocus, hobson-jobson, riffraff, artsy-fartsy, harum-scarum and 28 more...
Tweets
Looking for tweets for willy-nilly.

madmouth will he, nill he is a commonly cited antecedent to this phrase, but there's also will I, nill I:
Will I, nill I, the ineffable thing has tied me to him; tows me with a cable I have no knife to cut.
Moby Dick I-LXVII by Melville, Herman Jun 4, 2009
catkisses Reminds me of that old Peter Pan play "I'll send for Tiger Lily! And I'll Send for Peter Pan, we'll be there Willy Nilly!" Sep 4, 2008
oroboros Alternate definition: adj., impotent. --Mensa word list winner 2006 Mar 2, 2007