Commonly Spoken Languages:
* English: Hi, Hello
* Spanish: Hola
* French: Bonjour (formal), Salut (informal)
* German: Hallo
* Italian: Ciao
* Portuguese: Olá
* Russian: Здравствуйте (Zdravstvuyte, formal), привет (Privet, informal)
* Chinese (Mandarin): 你好 (Nǐ hǎo)
* Japanese: こんにちは (Konnichiwa)
* Korean: 안녕하세요 (Annyeonghaseyo, formal), 안녕 (Annyeong, informal)
* Arabic: مرحبا (Marhabaan)
* Hindi: नमस्ते (Namaste)
* Vietnamese: Xin chào
* Turkish: Merhaba
Less Common but Useful:
* Dutch: Hallo
* Swedish: Hej
* Finnish: Hei
* Greek: Γειά σου (Ya sou)
* Polish: Cześć
* Hungarian: Szia
* Czech: Ahoj
* Romanian: Salut
* Hebrew: שלום (Shalom)
* Thai: สวัสดี (Sawatdee)
* Indonesian: Halo
Remember:
* Formal vs. Informal: Some languages have different greetings depending on the level of formality.
* Context Matters: The best greeting depends on the situation and your relationship with the person you're greeting.
* Pronunciation: Be mindful of how to pronounce the greetings correctly.
This list provides a starting point, and there are many more ways to say "hi" in different languages. You can find additional greetings and resources online.