Country person moving too quickly by all accounts (6)
I believe the answer is:
russia
'country' is the definition.
(Russia is an example)
'person moving too quickly by all accounts' is the wordplay.
'person moving too quickly' becomes 'rusher'.
'by all accounts' indicates a 'sounds like' (homophone) clue ('by all accounts' can mean 'we hear').
'rusher' is a homophone of 'RUSSIA'.
(Other definitions for russia that I've seen before include "Eurasian state" , "Eastern European state" , "Large country" , "nation" , "Eurasian country" .)