brain·less 
(brānlĭs)
(brānlĭs)adj.
Unintelligent; stupid.
brainless·ly adv.
brainless·ness n.
- photic
- photo
- photo-
- photoactive
- photoactivity
- photoaged
- photoaging
- photoautotroph
- photoautotrophic
- photoautotrophically
- photobiologic
- photobiological
- photobiology
- photobomb
- photocell
- photochemical
- photochemically
- photochemical smog
- photochemistry
- photochromatic
- photochromism
- photocoagulate
- photocoagulation
- photocompose
- photocomposition