Green’s Dictionary of Slang

(S.Afr. Und.) a swindler.

1963

L.F. Freed Crime in S. Afr. 107: A ‘gipper’, a ‘fiddler’, a ‘diddler’, a ‘kitsler’, or a ‘kinsler’, a ‘chiseller’, or an ‘amuser’ is a swindler.