Fire contained by fireman, I'm at ease (7)
I believe the answer is:
animate
'fire' is the definition.
(I've seen this in another clue)
'contained by fireman i'm at ease' is the wordplay.
'ANIMATE' is hidden within the letters.
But, I'm uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for animate that I've seen before include "Spirited" , "Give new life or energy to" , "Inject life into, as with cartoon" , "Enliven, alive" , "Put life into as with cartoon" .)