Common Greetings:
* 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)
* Arabic: مرحبا (Marhabaan)
* Hindi: नमस्ते (Namaste)
* Vietnamese: Xin chào
Other Greetings:
* Dutch: Hoi
* Swedish: Hej
* Finnish: Hei
* Danish: Hej
* Norwegian: Hei
* Polish: Cześć
* Czech: Ahoj
* Hungarian: Szia
* Turkish: Merhaba
* Greek: Γειά σου (Ya sou)
* Thai: สวัสดี (Sawasdee)
* Indonesian: Halo
* Filipino: Kumusta
Note: Some languages have multiple ways to say "hi" depending on formality, time of day, or the relationship between the speakers. It's always a good idea to be aware of cultural nuances when greeting someone in a different language.