its hokkien and it means "like shit"
my supervisor told me that my work is "kanasai"
by jiawei March 23, 2005
A singaporean slang used when something goes wrong or when something bad happens. Also used as an exclamation when annoyed. Directly translated as "got shit" also can be expressed as kns on social media platforms and whatsapp.
"kanasai lah she ignored me on whatsapp"
by hawkeye2080 February 05, 2015