1. Having a projecting lower jaw
   - prognathous, hypognathous

See also: lantern-jawed, prognathism

• uncut
• undamaged
• undamped
• undatable
• undated
• undaunted
• undead
• undecagon
• undeceive
• undeceived
• undecided
• undecipherable
• undecipherably
• undeciphered
• undeclared
• undecomposable
• undecomposed
• undecorated
• undecylenic acid
• undedicated
• undefeated
• undefendable
• undefended
• undeferential
• undefiled