極めて
きわめて · kiwamete · JLPT N1 · adverb
exceedingly
🏔️ 極 = utmost peak; 極める = push to the peak; 極めて = to the peak, extremely
極 means pole or extreme point. 極める means to carry something to its limit, so 極めて carries that sense of reaching the extreme. It is a written expression, more formal than とても.