"Shoes"

Translation: Esgidiau

[JoshMassey3]

Eh-skid-iau, skid always makes me remember

[Kate_Fishman]

What would be the difference between "Esgidiau" and "Sgidiau"?

[Julianbark6]

Nothing. "Esgidiau" is more formal, "sgidiau" more colloquial

[fellipemartins]

What is the singular form for 'esgidiau'?

[EllisVaughan]

Esgid.

[fellipemartins]

Would you happen to know when should one add -iau and -au (or is it a trial and error thing)?

[EllisVaughan]

Hmm well Plurals in welsh are one of my weakest points because they are so irregular so really the best thing to do is learn them, but if in doubt think of a word with the same ending and use the plural ending for that or in speech you can try and pick an exact number and then you don't need to know the plural form. Also there are a good few more endings than just -au/-iau.