Good morning

Hint: Used until about 10am

Ohayo gozaimasu

Hello

Hint: A rather informal greeting used from about 10am until sundown

Konnichiwa

Good evening

Kombanwa

Good night

Hint: Said at night before going to bed and when parting at nigt during late hours outside the home

Oyasuminasai

Good-bye

Hint: On more formal occasions one uses shitsureishimasu

Sayonara

Good-bye

Hint: On less formal occasions one uses sayonara

Shitsureishimasu

Well then…

Hint: Said informally when parting from relatives of friends

Dewa mata Ja mata

So long

Hint: lit: "Go and come back". Said to members of a household

Itterasshai

So long

Hint: lit: "I"m going and coming back"

Ittekimasu

I'm back

Tadaima

Welcome home

Hint: This expression forms a pair with tadaima

Okaerinasai

[expression said before eating a meal]

Itadakimasu

[expression said after eating a meal]

Goshisosamadeshita

Congratulations

Omedeto gozaimasu

Thank you very much

Domo arigato gozaimasu

You're welcome

Do itashimashite

Excuse me / I'm sorry

Sumimasen

Wait a moment, please

Chotto matte kudasai

Once more, please

Mo ichi-do onegaishimasu

Please, go ahead

Dozo o-sakini

Take care / Be careful

Ki o tsukete

Take care of yourself

Hint: Used toward an ill or injured person

O-daijini