Crossword Genius

In private, a serious and particularly baffling problem (6)

Ross

I believe the answer is:

teaser

I'm a little stuck... Click here to teach me more about this clue!

'particularly baffling problem' is the definition.
'teaser' can be an answer for 'problem' (I've seen this before). I'm not certain of the 'particularly baffling' bit.

'in private a serious' is the wordplay.
'in' indicates the answer is hidden within the clue.
'TEASER' can be found hidden inside 'private a serious'.

'and' acts as a link.

Can you help me to learn more?

(Other definitions for teaser that I've seen before include "One who irritates playfully" , "Tricky question; intriguing ad" , "one using a backcomb" , "Difficult question" , "Tricky question; intriguing preliminary advert" .)

I've seen this clue in The Telegraph.
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