Calm there got disturbed (8)
I believe the answer is:
together
'calm' is the definition.
(thesaurus)
'there got disturbed' is the wordplay.
'disturbed' indicates anagramming the letters (the order of letters is disturbed).
'there'+'got'='theregot'
'theregot' anagrammed gives 'TOGETHER'.
(Other definitions for together that I've seen before include "tied" , "Level-headed" , "Well-controlled" , "Not apart" , "On the trot" .)