Frankenstein's assistant (4)

I believe the answer is:

igor

'frankenstein's assistant' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for igor that I've seen before include "Stravinsky, for example" , "Prince of Russian opera" , "Stravinsky, perhaps" , "Prince --, opera by Borodin" , "-- Stravinsky, composer" .)

I've seen this clue in the Universal, The Wall Street Journal, the Newsday and The New York Times.

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