English
Adjective
up the duff (not comparable)
-  (Britain, Australia, New Zealand, Newfoundland, colloquial, slang) Pregnant.
-  1994, The Daily Telegraph, quoted in 2005, Judith Siefring (editor), The Oxford Dictionary of Idioms, 2nd Edition, paperback, page 88,
-  At 19, he was married (‘only because she was up the duff’ he explains gallantly).
 
-  1998, Tracey Ullman, Tracey Takes On..., page 98,
-  “Well, when he found out that my gran was up the duff, he went back to his native Norway (or it might have been Sweden) […] .”
 
-  1999, Irvine Welsh, Filth, page 191,
-  It just means that some daft wee hairy that gets knocked up the duff has tae get oan the bus tae Carlisle tae get cleaned oot.
 
-  2008, Sam de Brito, The Lost Boys, page 14,
-  The great coalface of fuckwits; the fly-by-nighters, who do their five years in Bondi, befriend a Roosters player, get a good coke dealer, meet some tight westie bitch who′s moved here while she works a job in PR, they fall in love, she gets up the duff and then they have to buy a house in Condell Park and they′re gone […] .
 
 
Usage notes
-  Possibly offensive to pregnant women. Usage may imply that the pregnancy is unplanned and/or unwanted.
Synonyms