某啲人 (those people)
代詞某個人;用嚟諷刺、唔開名噉講一個指定人 (someone; used sarcastically to refer to a specific person without mentioning the name)
Examples
最衰都係啲人遲到啦!
zeoi3 seoi1 dou1 hai6 di1 jan4 ci4 dou3 laa1!
It's all because SOMEONE was late!
大家;一般人;所有人 (people; they; usually used as a pronoun to talk about common beliefs or practices)
Examples
啲人話食咁多蛋冇益㗎喎。
di1 jan4 waa6 sik6 gam3 do1 daan2 mou5 jik1 gaa3 wo3.
It's been said that eating too many eggs is not good for health.