1. to dress up or make fancy; to adorn or embellish (usually followed by 'up')
Usage: informal; often used with 'up'

Examples

• She gussied up her old dress with new ribbons and beads.
• He gussied himself up for the party in a tuxedo.
• They gussied up the plain room with colorful decorations.
• Don't gussy up the simple recipe—it's perfect as is.
• She gussied up her appearance before the job interview.