11 letters · 17 points in Scrabble
noun good luck in making unexpected and fortunate discoveries
originFrom Serendip (“variant of Serendib: Ceylon, Sri Lanka”) + -ity. Coined by English writer and politician Horace Walpole in 1754 based on the Persian story of the Three Princes of Serendip, who (Walpole wrote to a friend) were “always making discoveries, by accidents and sagacity, of things which they were not in quest of”.
Etymology from Wiktionary, CC BY-SA 3.0