訓 かたき,あだ,かな(う) ・ 音 テキ
Sino-Vietnamese: địch
Strike 攵 plus 啇 for sound: the one you fight, as in Vietnamese kẻ địch (enemy) and vô địch (invincible).
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
両国は長い間敵対していた。 (りょうこくはながいあいだてきたいしていた)
The two countries were hostile for a long time.