He might break out (5)
I believe the answer is:
baker
'he might' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'break out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'break' anagrammed gives 'BAKER'.
Can you help me to learn more?
(Other definitions for baker that I've seen before include "One who makes bread" , "Bread and cakes maker" , "Break (anag.)" , "one who works in a hot place" , "Maker of cakes/bread" .)