The most common and most likely answer to this crossword clue is the 10 letter word MANAGERIAL
M
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More clues leading to the result MANAGERIAL
- Executive rage — animal unleashed
- Executive area in feeding-place finally in regular use
- Executive staff going to African country with evil finally going to end
- Like those in charge, chap set over African country shifting left
- Bossy male hack wearing wire for broadcast?
- Recollect alarm in age of administration
- Supervisory staff lofty around group’s leader
- Executive game rain ruined prior to the French retreat
Buddy explains!

The straight part
We know that "Supervisory" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case supervisory = managerial.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MANAGERIAL mean?
MANAGERIAL adjective- Of or relating to a manager or management; involving management-like duties.