The Collaborative International Dictionary of English v.0.48:

Pseudo- \Pseu"do-\ [Gr. pseydh`s lying, false, akin to psey`dein
   to belie; cf. psydro`s lying, psy`qos a lie.]
   A combining form or prefix signifying false, counterfeit,
   pretended, spurious; as, pseudo-apostle, a false apostle;
   pseudo-clergy, false or spurious clergy; pseudo-episcopacy,
   pseudo-form, pseudo-martyr, pseudo-philosopher. Also used
   adjectively.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

62 Moby Thesaurus words for "pseudo":
   affected, apocryphal, artificial, assumed, bastard, bogus,
   brummagem, colorable, colored, counterfeit, counterfeited,
   distorted, dressed up, dummy, embellished, embroidered, ersatz,
   factitious, fake, faked, false, falsified, feigned, fictitious,
   fictive, forged, garbled, hokey, illegitimate, imitation, junky,
   make-believe, man-made, mock, perverted, phony, pinchbeck,
   plagiarized, pretended, put-on, quasi, queer, self-styled, sham,
   shoddy, simulated, snide, so-called, soi-disant, spurious,
   supposititious, synthetic, tin, tinsel, titivated, twisted,
   unauthentic, ungenuine, unnatural, unreal, warped, wrong