To make or attempt to make something seem less important, likely, or obvious.(verb)
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Use "play down" in a sentence
"One day we'll play golf, Mr. Tai-pan Dunross and you'd better be good because I can play down to ten on a good day — I learned about golf in a man's world early — so I'll rub your nose in it."
"I used to play down my passionsfashion, exercise, and the entertainment world."