扮 (bàn): to disguise oneself as; to dress up; to play (a role); to put on (an expression)

Every Halloween, my little sister loves to dress up as a witch, putting on a black dress and a pointed hat.

To give his son a surprise, the father disguised himself as Santa Claus and quietly placed the gift under the tree.

The police officer disguised himself as an ordinary customer and walked into the market, catching the thief who was stealing red-handed.

In the school drama performance, Li Ming dressed up as an old king, and his classmates all said he played the part very convincingly.

My younger brother used Mom's lipstick and old clothes to dress up as a clown, making the whole family burst out laughing.