intj, Cantonese, Hong-Kong, colloquial
Used to express apology over trivial matters, where apology is needed but the use of sorry would be considered too formal.
sor [---]
Jyutping
so1
Pinyin
sor
Definitions (粵典–words.hk)
語句、外來語
唔好意思、對唔住;係sorry嘅簡稱 shorthand for "sorry"