Definition of "buttoned-up" [buttoned-up]

• Conservative. (adjective)
• Carefully planned and executed. (adjective)

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• "In an interview with The Wall Street Journal at the company's New York headquarters last week, Mr. Echevarria spoke about the economic climate, Deloitte's buttoned-up culture and his rise up the corporate ladder."
• "In his buttoned-up Roman way, he, too, loves Antony, praising his military virtues with a starry-eyed admiration."
• "High-waist pencil skirts, buttoned-up silk blouses and a decadent touch of sparkle signal the return of cinematic '40s elegance."