Nth

This is the nth time I've told you to be careful.

Source: tatoeba (277644)

Get busy harnessing every marketing vehicle you currently use to the nth degree and make sure you leave no stone unturned.

Source: tatoeba (6607836)

In the morning of the 26th of March of 2023, Greg and I, both Filipinos, were talking in the teahouse, as I had my nth order of Strawberry Oat Matcha Latte and Greg, having already finished his coffee, attended to his newspapers and magazines. The barista at the cashier was Stefania, a beautiful black-haired Italian with an accent. Marlin, my Filipina friend, was sitting at a corner near the window. Near the counter stood a handsome head-shaven Japanese-looking man who was fluent in English. Greg and I discussed martial arts. There were the karate, judo, aikido, and kendo in Japan. There was the kung fu in China. There was the capoeira in Brazil. There was the arnis de mano in the Philippines. We mentioned Bruce Lee and Jackie Chan, famous martial artists in the movie industry.

Source: tatoeba (11626894)

Shea had just beaten me at chess, as usual, and, also as usual, I had gleaned what questionable satisfaction I might by twitting him with this indication of failing mentality by calling his attention to the nth time to that theory, propounded by certain scientists, which is based upon the assertion that phenomenal chess players are always found to be from the ranks of children under twelve, adults over seventy-two or the mentally defective.

Source: wiktionary