int. [Irish. (Farquhar was of Irish birth.)] An expletive expressing emotion or excitement, common in Anglo-Irish speech.

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1705.  Farquhar, Twin Rivals, III. ii. Arah, you Fool, ish it not the saam ting? Ibid. (1707), Beaux Strat., V. ii. Arra Honeys, a clear Caase.

2

1753.  Smollett, Ct. Fathom (1784), 119. Upon which he bade me turn out. ‘Arra, for what?’ said I.

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1820.  Combe (Dr. Syntax), Consol., II. 157. Arrah, my Dears, it does confound me.

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