treiglad caled

Welsh

Noun

treiglad caled m (plural treigladau caled or treigladau caledion)

1. (linguistics, countable) hard mutation, provection, fortition

Notes

The hard mutation is common as an initial mutation in Cornish and Breton, but only occurs word-internally in Welsh, as in:

• Old English bedhūs (“bedehouse”) → betws (“chapel”)
• defaid (“sheep (pl.)”), tŷ (“house,

dwelling”) → defeity (“sheepfold”)

• pob (“every”) + peth (“thing”) → popeth (“everything”)
• pobi (“to bake”) + tŷ (“house,

dwelling”) → popty (“oven”)

• teg (“fair”) + -ach (“-er”) → tecach (“fairer”)

Related terms

• treiglad llaes (“aspirate mutation”)
• treiglad meddal (“soft mutation”)
• treiglad trwynol (“nasal mutation”)
• treiglo (“to mutate”)

Mutation

Welsh mutation
radical	soft	nasal	aspirate
treiglad caled	dreiglad caled	nhreiglad caled	threiglad caled
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

References

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