"chan" is a normal word while "di chan"is a polite word to use to talk with someone who is higher position than yours. Lol

1. ดิฉัน / dì-chăn = "I" or "me" [used by female speakers in a formal setting] 2. ฉัน / chăn = "I" or "me" [used by females in an informal setting—also used by males with intimate friends]

You should use the word เหี้ย.

yes, you can use di chan in formal situations . in formal term can also use kha pa jao, kha pa jao aeng, dian(เดี้ยน) This word is short word of di chan otherwise you can also use can aeng ข้ tua chan Tua chan aeng Rao Rao aeng Khao ( khao,litery means him/her), but can also express as i, myself. Khao aeng So on..... Lastly , you can repeat your name instead of useing any of all above. This also works! Hope it helps.

"chan" is a normal word while "di chan"is a polite word to use to talk with someone who is higher position than yours. Lol