na-adjective
patriotic
Describes a person, attitude, action, or policy that shows love for one's country. Often used in political or social contexts.
彼はとても愛国的な人だ。
He is a very patriotic person.
愛国的な歌を歌う。
Sing a patriotic song.
愛国心 is a noun meaning 'patriotic feeling' or 'patriotism', emphasizing the emotional aspect, whereas 愛国的 describes the quality of being patriotic.
Derived from 愛国 (aikoku, 'patriotism') + 的 (-teki, '-like, -ic'), a common pattern for forming adjectival nouns.