also: きゅうきょう
adverb
after all; in the end; finally
Adverbial use indicating that something turns out to be the case after consideration or events. Often used in formal or literary contexts.
究竟、彼の判断は正しかった。
After all, his judgment was correct.
na-adjective, noun which may take the genitive case particle 'no', noun
Describes something that is supremely good, fitting, or convenient. Can be used as a noun or adjectival noun. Somewhat literary.
この場所は究竟の立地だ。
This location is ideal.
na-adjective, noun which may take the genitive case particle 'no', noun
Only with reading くっきょう
Restricted to the reading くっきょう. Refers to physical strength and sturdiness. Cross-referenced with 屈強, which is the more common term for this meaning.
See also: 屈強
彼は究竟の体躯を誇っている。
He boasts a robust physique.
屈強 is the standard term for 'robust' or 'brawny'. 究竟 in this sense is rare and mostly literary.
The kanji 究 (investigate, ultimately) and 竟 (end, finally) combine to suggest 'reaching the ultimate point'. The exact historical derivation is uncertain; the word is used in classical and literary Japanese.