Green’s Dictionary of Slang

(S.Afr.) weak, feeble.

2005		A. Lovejoy Acid Alex 147: The coloured ouens were usually so swak.
2008		A. Lovejoy ‘The Smell of Tears’ at www.acidalex.com 🌐 2: Hond doesn’t like being fokken swakbene.
2010		Mail & Guardian (Johannesburg) 16 Jan. 🌐 Go pray to your gods of castle, black label and hansa and then ask yourself . . . why am I settling for second best . . . swak.