Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Vulgar Slang Extremely irritated or angry. Often used with off.
- adj. Chiefly British Vulgar Slang Intoxicated; drunk.
Wiktionary
- v. Simple past tense and past participle of piss.
- adj. UK, Australia, New Zealand, South Africa, Canada, colloquial Drunk.
- adj. US, Canada, vulgar, colloquial Annoyed, angry.
GNU Webster's 1913
- adj. vulgar Angered or very annoyed.
WordNet 3.0
- adj. very drunk
- adj. aroused to impatience or anger
Etymologies
- Derived from piss. (Wiktionary)
Examples
“Not in the Nicholas Sarkozy sense of pissed* Iain is tea total but just, you know, pissed off.”
“As is, I was curious enough and the title pissed me off enoughto read the whole thing.”
“Now, 'pissed' for Ratzinger — I'm not sure 'pissed' is quite the word.”
“A: ALCOHOLIC MANICUREThe beauty of a manicurist getting you pissed is that you're more likely to go a bit "wacky" with the colours, and veer into the realms of tangerines and taupes.”
“I think the only one pissed is the individual who started this thread.”
“Her own supporters may remain pissed that she didn't win”
Sources: Clinton, Obama supporters discussing exit strategies
“The only reason why he's so pissed is that someone bullshit a quote from him that he never said.”
Michael Bay Doesn’t Approve of Transformers Theme Park Ride | /Film
“Face it ... what's got you pissed is that YOU don't "like" Eyman's initiatives.”
Sound Politics: Why the initiative process needs to be protected
“Being pissed is one thing, blowing off your own head because of it is something else entirely.”
Think Progress » Lynne Cheney ‘Marshals Support’ For Iraq War at Elementary School
“We will remain pissed off until November, when we will role over and vote Democrate again keeping these assholes in office.”
Lists
These user-created lists contain the word ‘pissed’.
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UK - slang
chin wag, arse about, bollock, starkers, sweet Fanny Adams, skive, shufti, codswallop, rhyming slang, bollocks, nookie, skew-whiff and 208 more...
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Blootered
Slang words for people who are drunk
rat-arsed, merry, mortal, out of your tree, pissed, plastered, legless, ratted, soused, drunk, inebriated
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Twitter favorites
The new favourite words of people on Twitter.
A script searches Twitter for "X is my new favorite word" and adds it to this list.
See also:
unfathomably, glice, cuh, fab, ciggaty, doll, thuggin, oxymoronic, pineapple, succubutt, griming, cheeky and 3027 more... -
amagnano's Words
truculent, churlish, antipathy, sociopathy, loquacious, disheveled, pouilly-fuisse, enamored, marked, assuage, ascetic, pagan and 190 more...
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feeling words
twitterpated, loquacious, ambiguous, pensive, sluggish, anxious, adventurous, curious, abandoned, absent-minded, abrasive, abused and 653 more...
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A Dram Too Many
notanotherjazzpoet had a very promising list which appears to have petered out. Yes, tosspots: descriptions of being drunk. Walk five metres on the white line then leave your suggestions right here.
drunk, guttered, pissed, baked, three sails in th..., smashed, paralytic, out of your tree, hammered, bombed, glazed, blotto and 336 more...
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2008 Wordlist
Hopefully, I'll be using this site for more than one year. It will be fun then to look back and see what new words I found worthy of notice in any given year.
All words spotted in 2008...longanimity, permalancer, breeder, biodegradable, handicapable, gender-neutral, translator, interpreter, translation, interpreting, kleptocracy, fanfiction and 1598 more...
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Moods
apathy, cuntificate, quixotic, noxious, fetid, malodorous, trepidation, expectancy, contempt, disgust, terror, fear and 149 more...
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Bad Mood
If you're gonna feel this way, you might as well enjoy it.
curmudgeonly, grumpy, cantankerous, resentful, crusty, pissed, irascible, moody, surly, cranky, peevish, cross and 57 more...
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ifea_need_help's Words
irk, porn, woot, pfft, fuck, swelter, homonculus, astronomical, booboo, capitulate, liquidation, pendulum and 30 more...
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There's a glass of punch below your f...
buzzed, tanked, drunk, smashed, trashed, puzzled, tore up, wasted, lubricated, tipsy, obliterated, tossed and 21 more...
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urrbody in the club get...
plastered, hammered, shitfaced, blotto, drunk, intoxicated, inebriated, crocked, flushed, wasted, totaled, soused and 22 more...
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soldier's Words
mad, pissed, marines, marine, tiffany, crazy, wild, pimp, soldiers
Tweets
Looking for tweets for pissed.

plethora Aus = both. Jul 22, 2008
mialuthien In US, they are angry that they are pissed (=they are pissed that they are pissed). In UK, however, they are pissed when they are angry (=they are pissed when they are pissed). :P
ETA. And in Australia, they are pissed when they are pissed that they are pissed. Jul 22, 2008
johnmperry US = angry
UK = drunk
see also pissed off, piss artist Jul 22, 2008