shonky

adjective -kier or -kiest Australian and NZ informal

of dubious integrity or legality
unreliable; unsound

Word Origin

C19: perhaps from Yiddish shonniker or from sh (oddy) + (w) onky

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012