頑丈
がんじょう · ganjou · JLPT N1 · na-adj
strong
🧱 頑 (stubborn, firm) + 丈 (sturdy, solid) = 頑丈: firm and strong, hard to break
頑 means stubborn or unyielding, and 丈 means sturdy or solid. Together they describe something that resists bending, breaking, or giving way.