Speaker's expression, crude perhaps, brings disorder (7)
I believe the answer is:
turmoil
'disorder' is the definition.
(I know that turmoil is a type of flutter)
'speaker's expression crude perhaps' is the wordplay.
'speaker's' indicates a 'sounds like' (homophone) clue.
'expression' becomes 'term' (I've seen this before).
'crude perhaps' becomes 'oil' (crude is a kind of oil).
'term' is a homophone of 'turm'.
'turm'+'oil'='TURMOIL'
'brings' acts as a link.
(Other definitions for turmoil that I've seen before include "Unrest - upheaval" , "State of great commotion or disturbance" , "upset" , "Hubbub" , "Disquiet" .)