12 letters · 18 points in Scrabble
noun equipment consisting of miscellaneous articles needed for a particular operation or sport etc.
noun a supplementary component that improves capability
originFrom Middle English appurtenaunce, from Anglo-Norman apurtenance and Old French apartenance, from apartenir, from Latin appertineō (“to belong, to appertain”). More at appertain. By surface analysis, appertain + -ance.
Etymology from Wiktionary, CC BY-SA 3.0