nth /enθ/
adjective[
Date: 1800-1900;
Origin: n mathematical sign for a number of unknown value + -th]
1. to the nth degree informal extremely, or as much as possible:
It was boring to the nth degree.2. [only before noun] informal the most recent of a long series of similar things that have happened:
Even after I’d reminded him for the nth time, he forgot. [TahlilGaran] Dictionary of Contemporary English ▲