define dress down Definition & Meaning of "Dress down" in English Dress one down - Idioms

I know in Boston, with our erratic weather, the weather will go up and down, up and down, most likely until the end of September, then it will begin to drop significantly

A couple attendees sought attention by dressing down (in sleeveless tops and T-shirts), and a coterie of drag queens stood out by dressing like mimes and Michael Jackson (among other things)

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For many, particularly young women, it also represents an opportunity to shine in a carefully chosen outfit that reflects their personal style and elegance