Welsh slang
Welsh slang (Welsh: bratiaith Gymraeg) is the colloquial terminology of the Welsh language, a Celtic language that is a co-official language of Wales alongside English.
The Welsh language also has a variety of profanities, many of which are derived from British English profanity.[1]
Phrases
A
B
- biji-bo
 - a penis[1]
 - bogal jobio
 - to have gay sex[1]
 - bustachu
 - to have sexual intercourse with a woman without any danger of impregnating her (bustach means "steer", i.e a castrated bull)[1]
 - bwchio
 - to have sex with someone, to fuck someone[1]
 
C
- cachgi
 - a coward (lit. 'dog shit')[1]
 - cachiad
 - faeces, shit[1]
 - cachu
 - to defecate, to shit[1]
 - cachu iar
 - chicken shit[1]
 - cachu planciau
 - to be terrified (lit. 'shitting planks')[1]
 - cachwr
 - a shithead (lit. 'shitter')[1]
 - calar
 - penis, dick, cock (derived from the Mabinogion)[1]
 - cael cachiad
 - to defecate, to take a shit[1]
 - cedor lama
 - a wanker (lit. 'llama's pubic hair')[1]
 - cer i grafu
 - go to Hell, an expression (lit. 'go to scratch')[1]
 - cerpyn jam
 - a tampon (used in Wrexham)[1]
 - cig a llysiau
 - the male genitalia (lit. 'meat and vegetables', in reference to their shape)[1]
 - cnych
 - fuck (noun)[1]
 - cnychu
 - to have sex, to fuck[1]
 - coc
 - the penis, the cock, the dick[1]
 - coc oen
 - a dickhead (lit. 'lamb's dick')[1]
 - codiad
 - an erection[1]
 - cont
 - cunt (a highly profane word though sometimes used as a term of endearment, like in Australian, British, Irish and New Zealand English)[1]
 - corris
 - cunt[1]
 - crnyiadur
 - a coward[1]
 - cwd
 - the scrotum, the ballsack, the nutsack (lit. 'pouch')[1]
 
Ch
- chwit-chwat
 - inconsistent (an onomatopoeia)[2]
 
D
- dim gwerth rhech dafad
 - worthless (lit. 'not worth a sheep's fart')[1]
 - disgleirio fel ceilliau ci
 - for something to be excellent, the bee's knees, the dog's bollocks (lit. 'to shine like dog's testicles')[1]
 - dos i chwarae efo dy nain
 - "go away", "fuck off" (lit. 'go play with your nan')[1]
 
Dd
E
F
- fel rhech jet
 - to be like a damp squib (lit. 'like a jet's fart')[1]
 
Ff
- ffwrch
 - fuck (noun)[1]
 - ffwrcho
 - to have sex, to fuck[1]
 - ffyc
 - fuck (expression and noun)[1]
 - ffycio
 - to have sex, to fuck[1]
 
G
- Gog
 - a Gog, a person from North Wales[3]
 
Ng
H
I
- iawn cont
 - a term of endearment (used in Caernarfon)[1]
 
J
- jini ffernac
 - a tampon[1]
 
L
Ll
- llawes goch
 - the female genitalia (lit. 'red sleeve')[1]
 
M
- mae hi wedi cachi arna i
 - "I'm buggered", "I'm for the chop" (lit. 'it's shit on me')[1]
 - malu cachu
 - talking nonsense, talking shit (lit. 'mincing shit')[1]
 - mewn cachiad
 - to do something very quickly (lit. 'en' or 'in a shit')[1]
 - mewn cachiad chwanan
 - to do something very quickly (lit. 'in a flea's shit')[1]
 - mewn cachiad nico
 - to do something quickly (lit. 'in a goldfinch's shit')[1]
 - mewn dau gachiad
 - to do something quickly (lit. 'in two shits')[1]
 - min dwr
 - a penis that is erect whilst the man is drunk (lit. 'watery hard-on/boner') [1]
 - mwg drwg
 - marijuana, cannabis (lit. 'bad smoke')[2]
 - mwrddrwg
 - a cheeky monkey (lit. 'great evil')[2]
 
N
O
P
- paid â chodi pas wedi pisio
 - "don't cry over spilt milk" (lit. 'don't lift your petticoats after pissing')[1]
 - pen-coc
 - a dickhead, a cockhead[1]
 - pidyn tarw
 - a dickhead (lit. 'bull's penis')[1]
 - pis
 - urine, piss[1]
 - pisio
 - to urinate, to piss[1]
 - pisio bwrw
 - heavy rain (lit. 'pissing rain')[1]
 - pisio cath
 - a white currant (lit. 'cat piss')[1]
 - pisio glaw
 - heavy rain (lit. 'pissing rain')[1]
 - piso
 - to urinate, to piss[1]
 - piso dryw
 - a weak drink, e.g tea (lit. 'wren's piss')[1]
 - piso dryw bach yn y môr
 - a drop in the ocean (lit. 'little wren's piss in the sea')[1]
 - piso gwidw
 - a weak drink, e.g. tea (lit. 'widow's piss')[1]
 - pwdin blew
 - the female genitalia (lit. 'hairy pudding')[1]
 
Ph
R
Rh
- rhacs jibidêrs
 - in smithereens (lit. 'rags in tatters')[2]
 - rhech mewn potel [bop]
 - something insignificant, "like a fart in a jacuzzi/hothub/spa" (lit. 'like a fart in a bottle [of pop (carbonated soft drink)]'[1]
 
S
- sach bach
 - a condom (lit. 'small sack'; used in Merthyr Tydfil)[1]
 - saim serch
 - semen, love juice (lit. 'love grease')[1]
 - sgleinio fel ceilliau ci
 - for something to be excellent, the bee's knees, the dog's bollocks (lit. 'to shine like dog's testicles')[1]
 - sguthan
 - a bitch, a harridan[1]
 - shinach
 - a sly bastard[1]
 - siani
 - the female genitalia[1]
 - silffo
 - to get off with someone[1]
 - sioncen
 - the vulva, the fanny[1]
 - Sir Gâr
 - Carmarthenshire (formally Sir Gaerfyrddin)
 - slebog
 - a promiscuous woman, a slut, a slag[1]
 - s'mae cwd
 - a greeting (used in Caernarfon)[1]
 - spwng dorth
 - an Arctic roll (lit. 'spunk loaf')[1]
 - swydd chwythiant
 - fellatio (a calque of the English word "blowjob")[1]
 
T
Th
U
W
Y
- Y Bermo
 - Barmouth (formally Abermaw)[4]
 - yn twll tin Ifan saer
 - a sarcastic reply to "Where is it?" (lit. 'in Ivan the carpenter's arse/ass')[1]
 
See also
- British slang, English-language slang used in the United Kingdom (including in Wales)
 
References
- ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn bo bp bq br bs bt bu bv bw bx "Useful phrases - swearing". clwbmalucachu.co.uk. Resources for Welsh learners. Retrieved 23 May 2025.
 - ^ a b c d Broster, Heather (April 24, 2020). "10 Wonderfully Weird Welsh Words & Expressions".
 - ^ "Definition of GOG | New Word Suggestion | Collins English Dictionary".
 - ^ Burkitt, Sian (October 15, 2021). "The Welsh place names at risk of being lost and forgotten". Wales Online.