Disconcerted through being imitated? (5)

I believe the answer is:

threw

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'disconcerted' is the definition.
('throw' can be a synonym of 'disconcert')

I cannot understand how the rest of the clue works.

(Other definitions for threw that I've seen before include "Formed (pot) on wheel" , "Confused" , "Bowled unfairly" , "Cast" , "Chucked" .)

I've seen this clue in the Evening Standard.

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