serth

serth (feminine singular serth, plural serth, not comparable, not mutable)

1. steep

• serthrwydd (“steepness”)
• unionserth (“perpindicular”)

• syrthio (“to fall”)

• D. G. Lewis, N. Lewis, editors (2005–present), “serth”, in Gweiadur: the Welsh–English Dictionary, Gwerin
• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “serth”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies