Adjective:
эцсийн, боломжтой, төгсгөлийн, шийдвэрлэх, чухал ач холбогдолтой, няцаагдашгүй, маргаангүй, үгүйсгэх аргагүй.
CONCLUSIVE proof that I am absolutely worthless
Well, Mom, if I did, it would be CONCLUSIVE proof
That seems fairly CONCLUSIVE.