頑として|がんとしてgantoshite[1]atamadaka (head-high)

1. expression, adverbstubbornly; firmly; determinedly; obstinately; resolutely; adamantly
   その男おとこは頑がんとしてその職しょくにしがみつき、決けっして退職たいしょくしようとはしなかった。↗

   The man held on to his job stubbornly and would not retire.

• Synonym断固だんこWrittenWritten/formal: stresses firm resolve and taking strong measures, as in 「断固反対する」.
• Synonym断然だんぜんNeutralDecisive and resolute; it also means 'by far', as in 「断然有利」, so it is used more widely than 「頑として」.
• RelatedあくまでNeutralStresses holding out to the very end without yielding; it can also mean 'merely', so it covers more ground than 「頑として」.
• Related敢然かんぜんWrittenWritten/formal: bold and decisive, facing difficulty without fear, as in 「敢然と立ち向かう」「敢然と拒否する」; it carries no nuance of stubbornness.
• RelatedきっぱりNeutralCommon in speech: clear-cut and unambiguous, as in 「きっぱり断る」; it has no nuance of stubbornness.
• Antonym素直にNeutralObediently and readily accepting what others say — the opposite of 「頑として」's refusal to yield.
• Antonym従順にWrittenWritten/formal: obediently following orders without resistance — the opposite of stubbornly refusing, as with 「頑として」.

Use 「頑として」 for refusing to budge no matter what; it often takes a negative, as in 「頑として聞かない」「頑として拒む」. For a clear-cut, decisive attitude pick 「きっぱり」; for firm resolve and strong measures pick 「断固」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 意見いけんや態度たいどを変かえず、強つよい意志いしを持もって対応たいおうするさま。