-iadur

Welsh

Alternative forms

• -adur

Etymology

Cf. Latin -ātor.

Pronunciation

• (North Wales) IPA^(key): /ˈjadɨ̞r/
• (South Wales) IPA^(key): /ˈja(ː)dɪr/

Suffix

-iadur m (plural -iaduron)

1. book

   ‎gair (“word”) + ‎-iadur → ‎geiriadur (“dictionary”)

   ‎dydd (“day”) + ‎-iadur → ‎dyddiadur (“diary”)

   ‎blwydd (“year”) + ‎-iadur → ‎blwyddiadur (“yearbook, annual”)

2. instrument

   ‎cyfrifo (“to count, to compute”) + ‎-iadur → ‎cyfrifiadur (“computer”)

   ‎rheoli (“to rule, to regulate”) + ‎-iadur → ‎rheoliadur (“pace maker”)

   ‎cengl (“skein, slip of yarn”) + ‎-iadur → ‎cengliadur (“reel, yarnwindle”)

3. agent suffix; usually added to a verbal root

Derived terms

Welsh terms suffixed with -iadur

amseriadur

blwyddiadur

bywgraffiadur

cliniadur

cofiadur

cyfarwyddiadur

cyfeiriadur

cyfrifiadur

dyddiadur

emyniadur

geiriadur

gliniadur

gwreiddiadur

gwyddoniadur

haeniadur

holiadur

newyddiadur

oriadur

rheoliadur

termiadur

trosiadur

tymeriadur

References

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