1. Pertaining to, or resembling, Atlas; strong 
2. Of or pertaining to the isle Atlantis

Encyclopedia: Atlantean

• under-represent
• under-the-counter
• under-the-table
• underachieve
• underachievement
• underachiever
• underact
• underactive
• underage
• underarm
• underbelly
• underbid
• underbodice
• underbody
• underboss
• underbred
• underbrush
• undercarriage
• undercharge
• underclass
• underclassman
• underclothed
• underclothes
• underclothing
• undercoat