(つつし)んで

つつしんで
adverb
respectfully; humbly; sincerely
formalbusinessexpression
1. respectfully; humbly; reverently
An adverb expressing respect and humility, used when making formal statements, offers, or condolences.
Please accept my sincere condolences.
(つつし)んで新年(しんねん)(よろこ)(もう)()げます
I respectfully extend New Year's greetings.
I humbly accept your invitation.

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This is very formal language used in ceremonial contexts, written correspondence, and official announcements.

Common set phrases

Etymology

From the verb (つつし) (to be discreet, to be reverent) in て-form. The kanji (きん) conveys respect and carefulness.