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attitudinarian

[at-i-tood-n-air-ee-uh n, -tyood-]
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noun
  1. a person who assumes attitudes or poses for effect.
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Origin of attitudinarian

1745–55; attitudin- (see attitude; by analogy with nouns ending in the Latin suffix -tūdō, stem -tūdin- -tude) + -arian
Related formsat·ti·tu·di·nar·i·an·ism, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018