* "Mm" or "Mmm": This is the most common and simple way to represent the sound. It captures the soft, breathy quality of the "mm-muh" sound.
* "Mwah": This spelling is more evocative and captures a more dramatic, exaggerated kiss sound.
* "Muah": Similar to "Mwah," this spelling adds a touch of romance and emphasis.
* "Mwah-mm": This combination uses both "Mwah" and "Mm" for a richer and more detailed sound.
* "Mmmmm": This uses multiple "m"s to convey the extended, lingering nature of the kiss.
Ultimately, the best way to spell the "mm-muh" sound of a kiss depends on the specific context and the desired effect. Consider the tone and mood of the writing and choose the spelling that best suits the scene.