The term 'quite bright' can be described by four crossword solutions: VIVID (5 letters), APT (3 letters), NEON (4 letters), and ASTUTE (6 letters). VIVID is an adjective meaning 'vividly bright or intense in color, ' while APT is an adjective meaning 'having a natural aptitude or skill.' NEON is a noun referring to a type of gas that produces a bright light, and ASTUTE is an adjective meaning 'having or showing an ability to accurately assess situations or people and turn this to one's advantage.' All of these words together describe something that is quite bright.