Kantiaeth

From Kant (“surname of Prussian philosopher Immanuel Kant”) +‎ -iaeth.

• (North Wales, standard, colloquial) IPA^(key): /ˈkantjaɨ̯θ/
  • (North Wales, colloquial) IPA^(key): /ˈkantjɛθ/
• (South Wales, standard) IPA^(key): /ˈkantjai̯θ/
  • (South Wales, colloquial) IPA^(key): /ˈkantjɛθ/

Kantiaeth f (uncountable, not mutable)

1. (philosophy) Kantianism

• Being derived from a proper name, Kantiaeth does not have its spelling adapted to typical Welsh orthographic conventions, which do not use the letter k. See also Zwinglïaeth (“Zwinglianism”).
• Like many other unnaturalised nouns recently derived from other languages, Kantiaeth does not undergo initial mutation.

• Kantaidd (“Kantian”, adjective)
• Kantiad (“a Kantian”, noun)

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