Praises kinky sex, keeping a large number upset (6)
I believe the answer is:
extols
'praises' is the definition.
(extolling is a kind of praising)
'kinky sex keeping a large number upset' is the wordplay.
'kinky' is an anagram indicator.
'keeping' indicates putting letters inside.
'a large number' becomes 'lot' (I've seen this in other clues).
'upset' says the letters should be written in reverse.
'lot' in reverse letter order is 'tol'.
'sex' anagrammed gives 'exs'.
'exs' placed around 'tol' is 'EXTOLS'.
(Other definitions for extols that I've seen before include "'Praises, lauds (6)'" , "Praises highly, lauds" , "Sings the praises of" , "Enthusiastically praises" .)