verb

give (someone or oneself) a different appearance in order to conceal one’s identity.

we took elaborate measures to disguise ourselves as locals

dress oneself up as,pass oneself of as,pretend to be,impersonate,pose as,personate,in disguise,camouflaged,incognito,under cover,unrecognizable,sailing under false colours

noun

a means of altering one’s appearance to conceal one’s identity.

I put on dark glasses as a disguise

false appearance,camouflage,concealment,outfit,costume,get-up