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

See also: confirm, supportive

• side dish
• side door
• side drum
• side effect
• side entrance
• side horse
• side judge
• side of bacon
• side of beef
• side of meat
• side of pork
• side order
• side pocket
• side road
• side street
• side view
• side yard
• side-blotched lizard
• side-glance
• side-look
• side-to-side
• side-wheeler
• side-whiskers
• sidearm
• sideband