究竟くっきょうConjugationsMeaningsAdverb1. after all; in the end; finallyNa-adjectiveNo-adjectiveNoun2. excellent; superb; handy; appropriate; ideal3. robust; brawny; muscular; strong; sturdyOther readings究きゅう竟きょうKanji used究research竟finallyPitch accentくっきょう