coirtheach
Definitions (by source)
‘wrongful’, ‘sinful’ 50.10; also cairrtheach; gen. sg. m. cairrthigh 12.8. See DIL, s.v. caireach
Aibidil Gaoidheilge & Caiticiosma: Seaán Ó Cearnaigh's Irish primer of religion, published in 1571. Editor: Brian Ó Cuív.