How did the roots or substantial portions of words become modified or inflected?
The Parson blurted an expletive, inflected like the profane.
Like naht were also inflected brust, breast, and burc, citadel.
As in the case of Latin, we have some inflected French forms in English.
One, like self and other, is so far a substantive, that it is inflected.
With exception of ...