Growing uncontrollably (7)

I believe the answer is:

rampant

(Other definitions for rampant that I've seen before include "Showing unchecked growth" , "Unrestrained, flourishing excessively" , "Showing unrestrained growth" , "Unrestrained and violent" , "Mantrap (anag) - unrestrained" .)

I've seen this clue in The Times.

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