1. Without concealment or deception; honest
   "their business was open and aboveboard"
   - straightforward

1. In an honest manner
   "was known for dealing aboveboard in everything"
   - honestly

See also: square, straight

• gannet
• ganof
• ganoid
• ganoid fish
• Ganoidei
• ganoin
• ganoine
• Gansu
• Gansu province
• Gantanol
• gantlet
• Gantrisin
• gantry
• Ganymede
• GAO
• gaol
• gaolbird
• gaolbreak
• gaoler
• gap
• gap year
• gap-toothed
• gape
• gaper
• gaping