na-adjective, noun
powerful; strong and elite
Describes a group, force, or organization that is both highly capable and vigorous. Often used in military, sports, or competitive contexts to emphasize elite strength.
その精強な部隊はどんな任務も遂行できる。
That elite unit can carry out any mission.
精強なチームを作るには、厳しい訓練が必要だ。
To build a powerful team, rigorous training is necessary.
Compound of 精 (refined, elite) and 強 (strong). The exact historical derivation is uncertain, but the combination conveys elite strength.