Initially told rebellious, entitled kids to take a hike (4)
I believe the answer is:
trek
'a hike' is the definition.
(I've seen this before)
'initially told rebellious entitled kids' is the wordplay.
'initially' indicates taking the first letters.
The first letters of 'told rebellious entitled kids' is 'TREK'.
'to take' is the link.
(Other definitions for trek that I've seen before include "Long and difficult trip" , "Expedition or difficult trip" , "A long arduous journey as in S Africa" , "Long and difficult journey" , "Long walk in the mountains?" .)