Crossword Genius

Tedious book containing intellectual's original research (8)

Ross

I believe the answer is:

tiresome

'tedious' is the definition.
(I know that tedious can be written as tiresome)

'book containing intellectual's original research' is the wordplay.
'book' becomes 'tome' (a tome is a book).
'containing' means one lot of letters goes inside another.
'original' indicates taking the first letters (the origin of the word).
'research' becomes 'res' (academic abbreviation).
The initial letter of 'intellectual' is 'i'.
'i'+'res'='ires'
'tome' going around 'ires' is 'TIRESOME'.

(Other definitions for tiresome that I've seen before include "'Tedious, irksome (8)'" , "irritating" , "Trying, vexatious" , "Tedious, dull" , "Rather boring" .)

I've seen this clue in The Times.
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