tyddyn

Welsh

Etymology

From tŷ (“house”) +‎ *dynn (“hill, height”).

Noun

tyddyn m (plural tyddynnod or tyddynnau)

1. farm holding

Mutation

Welsh mutation
radical	soft	nasal	aspirate
tyddyn	dyddyn	nhyddyn	thyddyn
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.