1. Characterized by partial or total absence of a brain
   - anencephalic

See also: anencephaly

• underpopulated
• underprice
• underprivileged
• underproduce
• underproduction
• underquote
• underrate
• underrating
• underreckoning
• underrun
• undersaturated
• underscore
• undersea
• underseal
• undersealed
• undersecretary
• undersell
• underseller
• undersexed
• undershirt
• undershoot
• undershorts
• undershot
• undershrub
• underside