Green’s Dictionary of Slang

beneuk(t) adj.

also beneek, beneeked, beneekte
[Du. neuk, to deceive, to push]
(S.Afr.)

1. contrary, impossible.

[SA] informant in DSAE (1996) 56/2: I have left [the company] as I had begun to realise that it was wragties a beneekte joint.
[SA]informant in DSAE (1996) 56/2: Beneuk, very difficult.

2. bad-tempered, insane.

[SA]A. Fugard Boesman and Lena Act II: We’re whiteman’s rubbish. That’s why he’s so beneeked with us .
S. Roberts in Bloody Horse No. 2 57: He sprayed stink sulphur all over the flowers in the flower show she had organized [...] She stayed beneukt for so long about the stink and the spoilt show [DSAE].