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Greetings
Aisatsu

Good morning
Ohayō お早う (casual)
Ohayō gozaimasu お早う ございます (formal)
[used until 10:00 AM]

Good afternoon
Konnichiwa こんいちは
[used after 10:00 AM]

Good evening
Konbanwa こんばんは
[used after 5:00 PM]

Good night
Oyasumi おやすみ (casual)
Oyasumi nasai おやすみなさい (formal)

See you.
Mata ne.

See you later.
Mata atode.

See you tomorrow.
Mata ashita ne.

See you soon.
Sore dewa, mata.

See you again. / Until we meet again.
Mata oaisuru hi made.

How are you? / Are you okay?
Genki? げんき? (casual)
Ogenki desu ka. おげんきですか

Yes, I'm fine.
Hai, Genki desu.

No, I'm not okay.
Iie, genki ja arimasen.

Long time no see.
Ohisashiburi.

Have a nice day!
Yoi ichinichi wo.

Have a nice weekend.
Yoi shumatsu wo.

Have a nice/safe trip.
Yoi goryokou wo.

Have a wonderful vacation.
Yoi kyuuka wo.

Congratulations!
Omedetō gozaimasu.

Happy Birthday!
Otanjōbi omedetō gozaimasu.

Merry Christmas.
Merī kurisumasu.

Happy New Year.
Shiawase na shin'nen.
Akemashita omedetō gozaimasu.

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⚜️ NOTE ⚜️

✍🏻 ja arimasen is the negative form of desu.

✍🏻 You can only say those casual words/phrases to your close friends. Never say those to your boss or people that has a higher rank than you because it might be sound rude to them.
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