Crossword Genius

Be overly preoccupied with something (6)

Ross

I believe the answer is:

obsess

(Other definitions for obsess that I've seen before include "Be constantly preoccupied" , "Haunt - preoccupy" , "Think only" , "Occupy the thoughts persistently" , "Bosses (anag.)" .)

I've seen this clue in The Irish Times.
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