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
端然と の訳語→ primly self-possessed
