Crossword Genius

Boredom seen in pupil regularly (5)

Ross

I believe the answer is:

ennui

'boredom' is the definition.
('ennui' can be a synonym of 'boredom')

'seen in pupil regularly' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'seen'+'in'+'pupil'='seeninpupil'
The alternating letters of 'seeninpupil' are 'ENNUI'.

(Other definitions for ennui that I've seen before include "French boredom and lassitude" , "Listless boredom" , "Weary feeling" , "Feeling of dissatisfaction" , "Feeling of disaffection" .)

I've seen this clue in The Sun and The Independent.
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