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

See also: corroborate, supportive

• song
• song and dance
• Song dynasty
• Song of Solomon
• Song of Songs
• song sparrow
• song thrush
• songbird
• songbook
• songfest
• songful
• songfulness
• Songhai
• songlike
• songster
• songstress
• songwriter
• sonic
• sonic barrier
• sonic boom
• sonic delay line
• sonic depth finder
• sonnet
• sonneteer
• sonny