IPA: /ˈspɔːrtiɪst/
KK: /ˈspɔrtiɪst/
The most active or enthusiastic about sports; having the most sporty qualities.
Among all the cars, the new model is the sportiest, designed for speed and agility.
Comparative: sportier
Superlative: sportiest
Sportiest → It is formed from "sport" (from Old French *desport*, meaning pastime or recreation) and the suffix "-iest" (meaning most). The word "sportiest" means the most inclined towards or characterized by sports or physical activities.
Think of 'sport' as a pastime and remember that 'sportiest' describes someone who is the most active or engaged in sports.