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

• fly off the handle
• fly on
• fly on the wall
• fly open
• fly orchid
• fly poison
• fly rod
• fly sheet
• fly tent
• fly the coop
• fly tipper
• fly-by
• fly-by-night
• fly-fishing
• fly-half
• fly-tip
• flyaway
• flyblown
• flybridge
• flycatcher
• flycatching warbler
• flyer
• flyfish
• flying
• flying bird