-ydh

From Proto-Brythonic *-ɨð, from Proto-Celtic *-iyos. Cognate with Welsh -ydd.

-ydh m (plural -ydhyon)

1. Forms masculine agent nouns – -er / -or

   Synonyms: -er, -yas

   ‎akontya (“to account”) + ‎-ydh → ‎akontydh (“accountant”)

   ‎ilow (“music”) + ‎-ydh → ‎ilewydh (“musician”)