Negative Outcomes of a result check indicate a unfavorable resolution to the activity a character attempts.
i20™ Making Checks: In going with the "Rule of Averages", only a single Result Check is made to determine Success or Failure and degree/quality of either of an Activity. The GM will { } Narrate it, and/or you may petition for an appropriate impact when anything other than a basic outcome is indicated. Note that checks made without proficiency can only apply a Attribute bonus no greater than the character's Proficiency Bonus.
Most Non-Combat checks (skills, traits, powers, etc.) are mostly a basic success/fail outcome. Worse outcome results can: