Crossword Genius

Regularly trusty — our teacher (5)

Ross

I believe the answer is:

tutor

'teacher' is the definition.
(tutor is a kind of teacher)

'regularly trusty our' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'trusty'+'our'='trustyour'
The alternate letters of 'trustyour' are 'TUTOR'.

(Other definitions for tutor that I've seen before include "Private or university teacher" , "Edify" , "Personal teacher" , "Master" , "class leader" .)

I've seen this clue in The Independent.
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