1. Serving to support or corroborate
   - collateral, confirmative, confirming, confirmatory, corroborative, substantiating, substantiative, validating, validatory, verificatory, verifying

See also: corroborate, supportive

• cotton-seed tree
• cottonmouth
• cottonmouth moccasin
• cottonseed
• cottonseed cake
• cottonseed oil
• cottontail
• cottontail rabbit
• cottonweed
• cottonwick
• cottonwood
• cottony
• cottony-white
• Cottrell precipitator
• Cottus
• Cotula
• Cotula coronopifolia
• Coturnix
• Coturnix communis
• Coturnix coturnix
• cotyledon
• cotyloid
• cotyloid cavity
• cotyloid joint
• cotyloidal