10 letters · 16 points in Scrabble
noun the location of a visual perception along a continuum from black to white
noun intelligence as manifested in being quick and witty
noun the quality of being luminous; emitting or reflecting light
originFrom Middle English bryghtnes, brightnesse, from Old English beorhtnes (“brightness, splendor”), from Proto-West Germanic *berhtnassī, equivalent to bright + -ness. Cognate with Old High German berahtnessī, berahtnessi (“brightness”).
Etymology from Wiktionary, CC BY-SA 3.0