na-adjective
Describes something related to scholarship or academic study; often used for approaches, attitudes, or works that are systematic and intellectual.
彼の研究はとても学問的だ。
His research is very scholarly.
学問的な議論が続いた。
An academic discussion continued.
Compound of 学問 (がくもん, 'scholarship, learning') + 的 (てき, '-like, -al'). The suffix 的 derives from Chinese 的 (de) and forms adjectival nouns in Japanese.