-ychu

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.).

• (North Wales) IPA^(key): /ˈəχɨ̞/
• (South Wales) IPA^(key): /ˈəχi/
• Rhymes: -əχɨ̞

-ychu

1. verb-forming suffix, -ify, -ise

   ‎brad (“betrayal”) + ‎-ychu → ‎bradychu (“to betray”)

   ‎claf (“sick”) + ‎-ychu → ‎clafychu (“to sicken”)

   ‎gwan (“weak”) + ‎-ychu → ‎gwanychu (“to become or make weak, to weaken”)

   ‎pas (“cough”) + ‎-ychu → ‎pesychu (“to cough”)

• Often (but not always) causes i-affection of internal vowels, for example:

‎pas (“cough”) + ‎-ychu → ‎pesychu (“to cough”)

‎hafal (“same”) + ‎-ychu → ‎efelychu (“to emulate”).

• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “-ychu”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies