Generally postpositive and not normally comparable.
Translations
The celebrity traveled incognito to avoid the paparazzi.
Знаменитость путешествовала инкогнито, чтобы избежать папарацци.
Definitions
Having one's true identity concealed. The prince arrived incognito, unnoticed by the crowd.
Computing, attributive: Relating to a browser session that does not record browsing history, cookies, or other local data. For extra privacy, she opened an incognito window before logging in.