Question validity of trend looking back on record run (9)
I believe the answer is:
discredit
'question validity' is the definition.
'discredit' can be an answer for 'question' (thesaurus). I am not certain of the 'validity' bit.
'trend looking back on record run' is the wordplay.
'trend' becomes 'tide' (I've seen this before).
'looking back' shows that the letters should be reversed in order.
'on' says to put letters next to each other.
'record' becomes 'disc' (eg a CD, compact disc).
'run' becomes 'r' (cricket abbreviation).
'tide' backwards is 'edit'.
'disc'+'r'='discr'
'edit' after 'discr' is 'DISCREDIT'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for discredit that I've seen before include "harm done to reputation" , "Smear" , "damage to good name" , "explode" , "To tarnish" .)