1. Not penetrable by light
   "lightproof containers"
   - light-tight

See also: opaque

• overawe
• overawed
• overbalance
• overbear
• overbearing
• overbearingly
• overbearingness
• overbid
• overbite
• overblown
• overboard
• overboil
• overbold
• overbook
• overbridge
• overbuild
• overburden
• overburdened
• overbusy
• overbuy
• overcall
• overcapacity
• overcapitalisation
• overcapitalise
• overcapitalization