α. 1900s– arlarse, 2000s– alarse, 2000s– allarse, 2000s– aularse, 2000s– owlarse.
β. 2000s– auldarse.
arlarsen.adj.
/ˈɑːlɑːs/, U.S. /ˈɑrlˌɑrs/ English regional (Liverpool).
A. n.
An unpleasant or annoying person; esp. one who is mean-minded, unkind, or unfair.
ΚΠ
1993 No Subj. in alt.flame (Usenet newsgroup) 19 Aug. No more will I have to listen to the mealy mothed [sic] whinings of a load of fuck shit arlarses.
1998 R. Newman Manners 38 I made a show of patting down his pockets. ‘You arlarse,’ he said.
2016 @fabulouusx 13 May in twitter.com (O.E.D. Archive) Whys my mum bein such an alarse about me going to Leeds?
B. adj.
Mean, unkind; unfair on someone.
ΚΠ
1999 Crit. needed on Story in alt.teens.intelligent.insanity (Usenet newsgroup) 27 July People see me as so weak that it would be a waste of time to beat me up... ‘No, no!’ they say, ‘don't hurt him! It's beaut on him. It's arl-arse.’
2014 J. Harvey Girl who just Appeared vi. 156 I know it's dead arlarse on you but I can't help it can I.
2016 Guardian (Nexis) 1 Feb. (Technology section) When I say ‘You gegging in?’ Google refuses to acknowledge that I am not saying ‘You going in?’ Which is pretty arlarse of Google.
Phrases
to feel arlarse on: to feel that a situation is unfair on (a person); to feel sorry for.
ΚΠ
2009 @Tom_Wrightt 14 Nov. in twitter.com (O.E.D. Archive) Omg I can't believe my aunty she was meant to do nans dinner but she's out with her mate... I feel proper arlarse on me nan.
2013 @asmhughes7 9 Apr. in twitter.com (O.E.D. Archive) Feel alarse on my mates that missed out on the pub last night, best night I've ever had.
This is a new entry (OED Third Edition, September 2019; most recently modified version published online December 2021).
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n.adj.1993