Welsh edit

Etymology edit

From is- (under, lower) +‎ byd (world). Calque of English underworld.

Pronunciation edit

Noun edit

isfyd m (plural isfydoedd)

  1. (mythology) underworld, netherworld
    Synonyms: Annwfn, Annwn
  2. (rare) criminal society
    Synonym: byd lladron

Mutation edit

Welsh mutation
radical soft nasal h-prothesis
isfyd unchanged unchanged hisfyd
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading edit

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