The Collaborative International Dictionary of English v.0.48:

Scunner \Scun"ner\, n.
   A feeling of disgust or loathing; a strong prejudice;
   abhorrence; as, to take a scunner against some one. [Scot. &
   Prov. Eng.] --Carlyle.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scunner \Scun"ner\, v. t. [Cf. Shun.]
   To cause to loathe, or feel disgust at. [Scot. & Prov. Eng.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Scunner \Scun"ner\, v. i.
   To have a feeling of loathing or disgust; hence, to have
   dislike, prejudice, or reluctance. [Scot. & Prov. Eng.] --C.
   Kingsley.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scunner
    n 1: a strong dislike; "they took a scunner against the United
         States"