What is mwah or muah?

Mwah or Muah is an onomatopoeic representation of a kissing sound. It is often used in text messages or social media posts as a verbal expression of love, affection, or gratitude. The term is believed to have originated from the sound effect used in comic books and cartoons to represent kissing or puckering of lips. Nowadays, it has become a popular expression and is often used between friends, partners, or family members to convey their emotions. It is also used as a playful tease or a flirty gesture.