pseudo UK /ˈs(j)uːdəʊ/US /ˈsuːdoʊ/noun 6adjective 2forms 1 noun6 •A poseur; one who is fake. •(disapproving) An intellectually pretentious person; a pseudointellectual. •Clipping of pseudoephedrine. •(Internet) A pseudonym; a false name used for online anonymity.Issues such as verifiability (for age declared), anonymity (in spite of pseudos and avatars) and traceability are at stake[…] — 2011 •(Internet) Short for pseudoelement. •(informal) pseudo-city code adjective2 •Other than what is apparent; spurious; sham. •Insincere. formspseudos