1. Capable of being challenged

See also: challenge, contestable

• bonavist
• bonbon
• bonce
• bond
• bond certificate
• bond issue
• bond paper
• bond rating
• bond servant
• bond trading
• bond-trading activity
• bondable
• bondage
• bonded labor
• bonded labour
• bonder
• bonderise
• bonderize
• bondholder
• bonding
• bondmaid
• bondman
• bondsman
• bondstone
• bondswoman