incognito
adj. B2 Upper Intermediate US //ˌɪnkɔɡˈnitoʊ// UK //ɪnkɒɡnˈiːtəʊ// incog·ni·to
adj. using a fake name or wearing a disguise so that people do not recognize you. You use this when you want to keep your identity secret while in public.
adj. having one's true identity concealed, typically through the use of an assumed name or a disguise. Often follows a linking verb or functions as a postpositive modifier.
The famous actor traveled incognito to avoid the cameras.
She browsed the internet in incognito mode to prevent the browser from saving her search history.
The monarch occasionally walked through the city incognito, hoping to understand the true concerns of the citizenry without the filter of royal protocol.
Usage
Often used predicatively after 'be' or 'travel', or as a postpositive adjective following the noun it modifies.