1. Not having a coating of stain or varnish
   - unstained 
2. Free from any effort to soften to disguise
   "the plain and unvarnished truth"; "the unvarnished candour of old people and children"
   - plain

See also: direct, unpainted

• Rodolia cardinalis
• rodomontade
• Rodrigo Borgia
• Rodya Raskolnikov
• roe
• roe deer
• Roebling
• roebuck
• roentgen
• roentgen ray
• roentgenium
• roentgenogram
• roentgenographic
• roentgenography
• roentgenoscope
• rofecoxib
• ROFL
• Rogaine
• rogation
• Rogation Day
• roger
• Roger Bacon
• Roger Bannister
• Roger Brooke Taney
• Roger de Mortimer