IPA: /roʊˈbʌstɪst/
KK: /roʊˈbʌstɪst/
The strongest or most vigorous in terms of health, strength, or effectiveness.
This is the robustest model we have ever produced, designed to withstand extreme conditions.
Comparative: more robust
Superlative: robustest
Robustest → It is formed from "robustus" (from Latin, meaning strong or sturdy) and the superlative suffix "-est" (meaning most). The word "robustest" means the most strong or sturdy.
Think of 'robust' meaning strong, and when you add '-est', it indicates the highest degree of strength. So, robustest means the most strong.