咗

Etymology 1
First attested in 《散語四十章》 (1877) as. This word replaces earlier in standard Cantonese.

Probably from ; the pronunciation may be due to influence from Mandarin zhuó  or colloquial tonal modification to a high-rising tone.

proposes that the original character is ; others (including and ) have similarly proposed  to be the original character. These derivations are phonologically and semantically problematic.