Past tense of attitudinise; adopted exaggerated or affected attitudes or poses.
From attitudinise (attitude + -ise) + -d (past tense marker). British spelling convention for the completed action of striking affected poses.
When a British critic wrote that an actor 'attitudinised dreadfully,' they meant he was overacting in an artificial, theatrical way—using exaggerated movements and expressions that seemed calculated rather than genuine.
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