Genius Farah restrains terrible tears (7)
I believe the answer is:
maestro
'genius' is the definition.
(I've seen this before)
'farah restrains terrible tears' is the wordplay.
'farah' becomes 'mo' (I can't justify this - if you can you should believe this answer much more).
'restrains' is an insertion indicator.
'terrible' indicates anagramming the letters.
'tears' anagrammed gives 'aestr'.
'mo' enclosing 'aestr' is 'MAESTRO'.
Can you help me to learn more?
(Other definitions for maestro that I've seen before include "Famous conductor" , "Highly skilled musician" , "conductor, maybe" , "Master of an art, or a great conductor of music" , "Distinguished musician - most are (anag)" .)