Unreasonably pester Meryl (6)

I believe the answer is:

streep

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'meryl' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'unreasonably pester' is the wordplay.
'unreasonably' is an anagram indicator.
'pester' is an anagram of 'STREEP'.

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(Other definitions for streep that I've seen before include "Meryl --, Oscar winner" , "Film star in The Iron Lady, b. 1949" , "Meryl - - (films)" , "[Thespian]" , "See 22" .)

I've seen this clue in the Evening Standard.

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