1. Not up to expectations
   - disappointing, unsatisfying

See also: dissatisfy, unsatisfactory

• Kaposi's sarcoma
• Kaposi's varicelliform eruption
• kappa
• kappa-meson
• Kapsiki
• kapuka
• kaput
• Kara Kum
• Kara Sea
• karabiner
• Karachi
• Karaites
• Karakalpak
• Karakoram
• Karakoram Range
• Karakorum Range
• karakul
• karaoke
• karat
• karate
• karate chop
• karateka
• karaya gum
• Karbala
• Karel Capek