Definitions by An Sionnach Beag

Mar dhea 

(Pronounciation: Mahr Yah)
From Irish Gaelic.
Sarcastic response or statement about the innacuracy of a sentence, as in "Yeah Right" or "As if".

-"I did not have sexual relationship with that woman"
-"Mar dhea !"

Mar dhea by An Sionnach Beag June 23, 2022