Thá coicthigheas ó bhí sé annso. - Its a fortnight since he was here. ar feadh coicthighís - For the duration of a fortnight. coicthigheas ó n'diu (o:nuv) - a fortnight from today. C- 's lá inde - a fortnight yesterday. C- ó máireach - a fortnight from tomorrow.
Gach (aon) coicthigheas - every fortnight. I n-aghaidh an choicthighis - every fortnight, by the fortnight. faghainn sé a phádh i n-agaidh an coicthighis. - He is paid fortnightly.