that settles it

• decidedReached a conclusion
• finalLast and decisive
• doneNo longer in progress
• case closedMatter finally resolved
• end of discussionTermination of argument

resolved · conclusion · verdict · clinched · determined · period · finished · sealed · locked in · definitive · irrevocable · gavel · showdown · ultimatum · enough said · deal breaker · proof · confirmed

• conversation enderscase closed, end of story, final word, last word, I rest my case