Scundered
Heard in Down, Derry, Antrim and Tyrone
Mortally embarrassed; the utmost degree of embarrassment. One can be scundered oneself or scundered for another person upon witnessing something potentially humiliating happen to them.
Oh, here's me, I am so scundered!" "Oh Jaysus, I was so scundered for you!" "No, I can't go up and ask him out, the SCUNDERATION of it!
Good gracious, I am utterly mortified! Good heavens, I felt mortified on your behalf! No, I simply cannot approach him, the sheer mortification of it!