Awkward uncle had to be got going (8)
I believe the answer is:
launched
'got going' is the definition.
The definition and answer can be both related to change as well as being past participle verbs.
Maybe they are linked in a way I don't understand?
'awkward uncle had' is the wordplay.
'awkward' is an anagram indicator.
'uncle'+'had'='unclehad'
'unclehad' is an anagram of 'LAUNCHED'.
'to be' is the link.
Can you help me to learn more?
(Other definitions for launched that I've seen before include "Sent on course as uncle had" , "Put a vessel in the water" , "Set a ship in motion" , "Propelled" , "Sent a newly-built boat into the water" .)