恐縮 きょうしゅく
kyō shuku

Noun
Suru Verb

1. feeling (much) obliged; being (very) grateful; being thankful

Intransitive
Noun
Suru Verb

2. feeling sorry (for troubling someone); feeling ashamed (e.g. of an error); feeling embarrassed (e.g. by someone's compliments, hospitality, etc.)

Intransitive
恐縮 きょうしゅくですが、2 がつ なな 約束 やくそくをキャンセルさせてください。
kyōshukudesuga nigatsu nijū shichinichino yakusokuo kyanseru sasete ku. dasai
I am very sorry, but I must cancel our appointment for February 27.
Noun
Suru Verb

3. shrinking back in fear

Intransitive
Archaic