What's the "een" in Halloween?
mid-14c., "fact of being lost or destroyed," from Old French perdicion "loss, calamity, perdition" of souls (11c.) and directly from Late Latin perditionem (nominative perditio) "ruin, destruction," noun of action from past participle stem of Latin perdere "do away with, destroy; lose, throw away, squander," from per- "through" (here perhaps with intensive or completive force, "to destruction") + dare "to put" (see date (n.1)). Special theological sense of "condition of damnation, spiritual ruin, state of souls in Hell" (late 14c.) has gradually extinguished the general use of the word.