(がん)として

がんとして
adverb
stubbornly; firmly; resolutely
descriptive
1. stubbornly; firmly; resolutely
Modifies verbs of refusing, denying, or maintaining a position to express that someone will not budge or compromise. Carries a sense of inflexibility — sometimes admiring, often critical.
(かれ)(がん)として(みと)めなかった
He stubbornly refused to admit it.
祖父(そふ)(がん)としてスマホ使(つか)おうとしない。
My grandfather stubbornly refuses to use a smartphone.
Even with many objections, the president stubbornly refused to bend on his policy.

Formed from (がん) (stubborn) + として (acting as). Almost always pairs with negative verbs of refusing, denying, or rejecting — describing the firmness of someone's resistance.

Common collocations

Similar words