mórchol

Old Irish

From mór (“great”) +‎ col (“sin”).

mórchol n (genitive mórchuil)

great sin
- c. 800–825, Diarmait, Milan Glosses on the Psalms, published in Thesaurus Palaeohibernicus (reprinted 1987, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, vol. I, pp. 7–483, Ml. 91^a21
  Is hé forcan du·rat-som forsna mmórchol du·rigénsat a námait fris, díltud remdéicsen Dǽ desom, húare nád tarat dígail forsnahí du·rigénsat in⟨na⟩hísin frissium.
  It is the end that he has put on the great sins that his enemies have committed against him, the denial of God’s providence for him, because he has not inflicted punishment on those who have done those things to him.

Neuter o-stem
	Singular	Dual	Plural
Nominative	mórchol^N	mórchol^N	mórchol^L, mórchola
Vocative	mórchol^N	mórchol^N	mórchol^L, mórchola
Accusative	mórchol^N	mórchol^N	mórchol^L, mórchola
Genitive	mórchuil^L	mórchol	mórchol^N
Dative	mórchol^L	mórcholaib	mórcholaib
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

Old Irish mutation
Radical	Lenition	Nasalization
mórchol also mmórchol after a proclitic ending in a vowel	mórchol pronounced with /β̃(ʲ)-/	unchanged
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.