1. Lacking embellishment or ornamentation
   "functional architecture featuring stark unornamented concrete"
   - plain, bare, spare, unembellished

See also: unadorned, undecorated

• unwarrantably
• unwarranted
• unwary
• unwashed
• unwatchful
• unwavering
• unwaveringly
• unwaxed
• unweaned
• unwearable
• unwearied
• unweary
• unwearying
• unweathered
• unweave
• unwebbed
• unwed
• unwedded
• unwelcome
• unwelcome guest
• unwelcome person
• unwell
• unwellness
• unwholesome
• unwholesomeness