in English is:

enervation

Mutations

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

Use

y dinerthedd hwn
fy ninerthedd i
dy ddinerthedd di
ei ddinerthedd ef/o
ei dinerthedd hi
ein dinerthedd ni
eich dinerthedd chi
eu dinerthedd nhw/hwy
External

Dictionary Portal

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

Specialist Dictionaries
Glossaries
Terminology
Encyclopedia
Example Sentences
Sentences containing:

*External websites will be opened in a new window.