Pace jerk has wrong, upped (7)
I believe the answer is:
jogtrot
'pace' is the definition.
'jerk has wrong upped' is the wordplay.
'jerk' becomes 'jog'.
'has' says to put letters next to each other.
'wrong' becomes 'tort' (legal term).
'upped' says the letters should be written in reverse (in down clue, made to go up).
'tort' back-to-front is 'trot'.
'jog'+'trot'='JOGTROT'
(Other definitions for jogtrot that I've seen before include "boring routine" , "exercise" .)