The correct spelling of “muah” is with an “h” at the end, making it “muah”. It is an interjection used to represent a kiss, typically in a playful or affectionate context. It can be used in written communication, such as text messages or social media posts, to convey a sense of affection or endearment.
The use of “muah” became popular in the early 2000s, particularly among young people and online communities. It is often used in a playful or flirty manner, and can be seen as a way to add a touch of affection to a message. While it is primarily used in informal settings, it has also made its way into some more formal contexts, such as personal emails or even greeting cards.