|The Simple English Wiktionary has a definition for: hello.|
Hello is a greeting in the English language. It is common between two people in a non-formal (informal) setting, but can also be used in a formal setting. There are also many other ways of saying "hello", for example a wave of the hand, a salute or a bow (both very formal), a handshake (a little formal) or a high five (very informal). Saying "hello" is a sign of politeness, especially when it is said in a friendly way. "Hello" was first used in writing in about 1833.
Many people say "Hello" when they answer a phone call. Sometimes, people can say "Good morning" in the morning or noon, "Good afternoon" in the afternoon,"Good evening" in the evening, and Good night in the night-time/when it's dark. These greetings are normally used in more formal situations.
Other greetings like "hello" include; Hi, Hallo, Hiya, Howdy, Hey, Howya, 'Sup, Yo, 'Yello, Herro, and many more.
The opposite of hello is goodbye. People say this when they leave.