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

See also: supportive, verify

• use
• use immunity
• use of goods and services
• use up
• useable
• useableness
• used
• used to
• used-car
• used-car lot
• useful
• usefully
• usefulness
• useless
• uselessly
• uselessness
• Usenet
• user
• user interface
• user-friendliness
• user-friendly
• username
• Ushas
• usher
• usher in