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The Collaborative International Dictionary
Misseem

Misseem \Mis*seem"\, v. i.

  1. To make a false appearance. [Obs.]

  2. To misbecome; to be misbecoming. [Obs.]
    --Spenser.

Wiktionary
misseem

vb. (context literary English) To be unbecoming to; not to suit. (from 15th c.)