恐きょう縮しゅく至し極ごく

na-adjective, noun which may take the genitive case particle 'no'

extremely grateful; deeply obliged

Very formal and somewhat stiff expression of deep gratitude, often used in business letters or formal speeches. Conveys a sense of being overwhelmed by the kindness or favor received.

• ご厚こう情じょうを賜たまわり、恐きょう縮しゅく至し極ごくに存ぞんじます。

  I am extremely grateful for your kindness.

• このたびは過か分ぶんなお心こころ遣づかいをいただき、恐きょう縮しゅく至し極ごくでございます。

  I am deeply obliged by your excessive consideration this time.