Be like others and keep up with a court action (6,4)
I believe the answer is:
follow suit
'be' is the definition.
(I know that follow suit is a type of imitate)
'keep up with a court action' is the wordplay.
'keep up' becomes 'follow' (synonyms).
'with' means one lot of letters go next to another.
'a court action' becomes 'suit' (I've seen this in another clue).
'follow'+'suit'='FOLLOW SUIT'
'like others and' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for follow suit that I've seen before include "Do as others do" , "go from club to club" , "in due course" , "Play another club, perhaps" , "Do the same as someone else" .)