overbright

adjective

over·​bright ˌō-vər-ˈbrīt 

: excessively or unpleasantly bright

an overbright glare

… the performances—overbright smiles; strained, tortured grimaces—push it over the edge.

—Brian Seibert

… if you add just a little green to an overbright red …

—Lexi Sundell

… this comedy of overbright 20-somethings searching for themselves …

—Associated Press

Word History

First Known Use

1587, in the meaning defined above