How to sign: the attire worn in a play or at a fancy dress ball
"he won the prize for best costume";
Categories: attire, dress, garb
Within this category: fancy dress, wardrobe
How to sign: dress in a costume
"We dressed up for Halloween as pumpkins";
Similiar / Same: dress up
Categories: apparel, clothe, dress, enclothe, fit out, garb, habilitate, raiment, tog