1. Capable of making an error
   "all men are error-prone"
   - erring

See also: fallible

• unrestraint
• unrestricted
• unrestrictive
• unretentive
• unretrievable
• unrevealed
• unrevealing
• unreverberant
• unrevised
• unrevived
• unrewarded
• unrewarding
• unrhetorical
• unrhymed
• unrhythmic
• unrhythmical
• unrifled
• unrig
• unrigged
• unrighteous
• unrighteously
• unrighteousness
• unrimed
• unrip
• unripe