This is the 2582nd most frequent Polish word.
sportowym
"Sportowym" means "sporty" or "related to sports" in English.
In this sentence, 'sportowym' is an adjective in instrumental case describing the masculine noun 'samochodem' (car), specifying its characteristics as a 'sports car'.
Janek jeździ sportowym samochodem.
Janek drives a sports car.
Here, 'sportowym' is an adjective in instrumental case modifying the noun 'duchem' (spirit) to describe the nature of the competitions.
Na stadionie odbywały się zawody sportowym duchem.
Competitions took place at the stadium with a sports spirit.
In this context, 'sportowym' is an adjective in instrumental case referring to the masculine noun 'sprzętem' (equipment), indicating the type of equipment being discussed.