in English is:

substitutability

Mutations

Soft:(no mutation)
Nasal:(no mutation)
Aspirate:(no mutation)

Use

yr amnewidiadwyedd hwn
fy amnewidiadwyedd i
dy amnewidiadwyedd di
ei amnewidiadwyedd ef/o
ei hamnewidiadwyedd hi
ein hamnewidiadwyedd ni
eich amnewidiadwyedd chi
eu hamnewidiadwyedd nhw/hwy
External

Dictionary Portal

This is a library of dictionaries and other online resources where you can search further for amnewidiadwyedd*:

Specialist Dictionaries
Glossaries
Terminology
Encyclopedia
Example Sentences
Sentences containing:

*External websites will be opened in a new window.