This is a list of greetings, or あいさつ in Japanese. The right column provides attempted translations and usage notes.

Meeting Edit

Japanese English
おはよう Mornin' (informal)
おはようございます Good morning. (formal)
こんにちは Good day / good afternoon.
こんばんは Good evening.
おやすみ Night! (informal)
おやすみなさい Good night. (formal)
はじめまして (Opening, when introducing yourself)
よろしく Nice to meet you. (informal)
よろしくおねがいします Nice to meet you. (formal, more commonly used)

Leaving Edit

Japanese English
さようなら Farewell, goodbye.
じゃあ、また See you! (informal)