お墨付(すみつ)き

お墨付(すみつ)き conveys the idea of authoritative endorsement — approval from someone whose opinion carries weight. It adds a sense of trustworthiness or credibility.

Etymology

Originally referred to documents bearing an official black ink (墨(すみ)) seal or signature from feudal lords or the shogunate. The お prefix adds politeness.

Common patterns

• 〜のお墨付(すみつ)きをもらう: to get approval/endorsement from ~
• お墨付(すみつ)きを与(あた)える: to give one's seal of approval
• お墨付(すみつ)きがある: to have official approval
• お墨付(すみつ)き付(つ)き: endorsed, with official approval

Usage

Often used with authority figures: 医者(いしゃ)のお墨付(すみつ)き (doctor's approval), 専門家(せんもんか)のお墨付(すみつ)き (expert endorsement), 社長(しゃちょう)のお墨付(すみつ)き (president's approval). Can be used somewhat humorously or ironically.