negligible - So small or unimportant that it can be ignored or doesn't have a noticeable effect; insignificant in amount, size, or impact — too minor to be worth considering.

The difference in price was negligible, so she bought with the higher-quality option.
repercussions - The effects or results of an action, event, or decision, especially those that are unintended or negative.

His decision to suddently quit the company without notice had serious repercussions, hurting his reputation and making it hard to find another job.