Some master notoriously strict (5)

I believe the answer is:

stern

'strict' is the definition.
(I know that strict can be written as stern)

'some master notoriously' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'STERN' is hidden in the letters of 'master notoriously'.

(Other definitions for stern that I've seen before include "Severe and unremitting: area of a ship" , "Severe, forbidding" , "having a forbidding appearance" , "Grim, strict" , "Old star" .)

I've seen this clue in The Daily Express.

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