its part of the Japanese phrase for good night
well be careful which one you use shini nasai = please die shinji nasai = believe me
おやすみなさい - oyasumi nasai, or just oyasumi to be less formal
SumimasenorGomen nasai
An-Nasai
Gomen Nasai
It means: "please eat" Conjunctive form + nasai creates this form It is similar to the -te kudasai form.
They say, "Gomen nasai." or "Sumimasen."
Casually: ごめんね (gomen ne) Politely: ごめんなさい (gomen nasai)
The phrase 'gomen nasai, wakarimasen' means "I'm sorry, I don't understand." 'Dou desu ka' means "How is it/how about it".
O-kaeri nasai Okaerinasai.
強めなさいtsuyome nasai
Gomen (Ne) Gomen nasai Sumimasen