cochni

Welsh

coch (“red”) +‎ -ni^[1]

cochni m (uncountable)

Welsh mutation
radical	soft	nasal	aspirate
cochni	gochni	nghochni	chochni
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

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