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to dress (oneself in); to attire oneself in; to adorn; to decorate
to pretend; to feign; to affect; to disguise oneself as
「粧う」 has another reading with different meanings.
特別な日に美しく粧って出かけた。
I dressed beautifully for a special day.
彼女は鏡の前で丁寧に粧っている。
She is carefully adorning herself in front of the mirror.
彼はパーティーのために粧った。
He dressed up for the party.