Picking up on a few words above:

Ferninst - Has the usage in Donegal of 'on account of' as well as 'near to' as in 'He changed his dirty shirt ferninst the neighbours seeing him'

Redd up as in tidy up is, I suspect, from the gaelic 'Reidh'- to ready or tidy.

Gansey is a direct translation from the gaelic word for shirt

My favourite is 'Tworthy' from Ballymena direction - it means '2 or 3'