An intellectually pretentious person; a poseur(noun)
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Use "pseud" in a sentence
"He constantly goes on about how he is the only credible lyricist in the Western world and implies that everyone else is some kind of pseud/plagiarist, And about being working class - he doesn't seem to do a fat lot of work to me."
"I think pseud in nc has it right, that at this point, a campaign of non-violence would be ineffectual given the media biases at work."
"Wanna see what a real non sequitur looks like, pseud?"