Turmoil minutes after master interrupted by learner (9)
I believe the answer is:
maelstrom
'turmoil' is the definition.
(I've seen this before)
'minutes after master interrupted by learner' is the wordplay.
'minutes' becomes 'm' (common abbreviation).
'after' says to put letters next to each other.
'master' becomes 'maestro' (synonyms).
'interrupted by' means one lot of letters goes inside another.
'learner' becomes 'l' (as in a learner driver with L-plates on their car).
'maestro' going around 'l' is 'maelstro'.
'm' after 'maelstro' is 'MAELSTROM'.
(Other definitions for maelstrom that I've seen before include "Powerful circular current of water" , "great confusion" , "disorder" , "Confused situation" , "danger to shipping" .)