Pseudo
/ˈs(j)uːdəʊ/
noun
An intellectually pretentious person; a pseudointellectual.
A poseur; one who is fake.
(travel industry) pseudo-city code
adjective
Other than what is apparent; spurious; sham.
Insincere.
noun
A sympathomimetic alkaloid commonly used as a decongestant; a chemical compound, an isomer of ephedrine, with the formula C10H15NO.