rigid

こわばる の訳語→ harden inert obdurate stiff stiffness stricken tense tighten

確固たる の訳語→ decided rigorous solid steadfast unshakable

固い の訳語→ firm formidable sealed severe tough

固く の訳語→ absolutely earnest heavily tensely tightly

石 の訳語→ flint stone

端然と の訳語→ primly self-possessed

そのほかの「rigid」で始まる語句・表現

rigidly