disguise

an outward semblance that misrepresents the true nature of something; "the theatrical notion of disguise is always associated with catastrophe in his stories"

any attire that modifies the appearance in order to conceal the wearer's identity

the act of concealing the identity of something by modifying its appearance; "he is a master of disguise"

make unrecognizable; "The herb masks the garlic taste"; "We disguised our faces before robbing the bank"