Chinese/Cantonese dialect only (not used by speakers of other Chinese dialects such as Mandarin); widely used slang term that literally has the exact meaning and connotation as the word "fuck" in English. Can be used as a noun or a verb.
deel lay loe moe ga chull haeigh-fuck your old mother's stinky cunt!
ho deel ah-good fuck
lun-deel-literally means "dick-fuck" (same connotation as "asshole or dickwad")