12 letters · 21 points in Scrabble
noun an ode honoring a bride and bridegroom
originLearned borrowing from Latin epithalamium, itself borrowed from Ancient Greek ἐπιθαλάμιον (epithalámion, “bridal song”), neuter form of ἐπιθαλάμιος (epithalámios), from ἐπί (epí, “upon”) + θάλαμος (thálamos, “inner chamber, wedding chamber”).
Etymology from Wiktionary, CC BY-SA 3.0