0 a word or part of a word from which you get another word
The 'hawk' etymon is perhaps unlikely on onomastic grounds.
But that etymon suffers from a want of documentary evidence at a sufficiently early date.
Hydronyms from various languages can all share a common etymon.
Coates speculates further that the "-i-" could have arisen by metathesis of the "-i-" in the last syllable of his own suggested etymon (see below).
