1. Having no curves
   - uncurved

See also: straight

• race problem
• race riot
• raceabout
• racecard
• racecourse
• racehorse
• racemate
• raceme
• racemic
• racemic acid
• racemose
• racer
• racerunner
• racetrack
• racetrack tout
• raceway
• Rachel
• Rachel Carson
• Rachel Louise Carson
• rachet
• rachet up
• rachis
• rachischisis
• rachitic
• rachitis