IPA: /kəˈpeɪbəlɪst/
KK: /kəˈpeɪbəlɪst/
Having the highest ability or skill to do something.
She is the capablest student in the class, always achieving the best results.
Comparative: more capable
Superlative: capablest
Capablest is formed from "capable" (from Latin "capabilis", meaning able to hold or contain) and the superlative suffix "-est" (meaning most). The word "capablest" means most able or having the greatest capacity to do something.
Think of 'capable' meaning able to do something, and when you add '-est', it indicates the highest degree of that ability.