Interfere with, disarrange (7)
I believe the answer is:
disturb
I believe this is a double definition.
'interfere with' is the first definition.
(I've seen this before)
'disarrange' is the second definition.
(thesaurus)
(Other definitions for disturb that I've seen before include "Upset, confuse" , "Interrupt, annoy" , "Break" , "Molest" , "Upset or tamper with" .)