jack-of-all-trades, master of none

:  a person who can do passable work at various tasks :  a handy versatile person

:  a male teacher

:  a person holding an academic degree higher than a bachelor's but lower than a doctor's

:  the degree itself

:  being or relating to a master: such as

:  having chief authority :  dominant

:  skilled, proficient

:  to become master of :  overcome

:  to become skilled or proficient in the use of

:  to gain a thorough understanding of

:  not any

:  not one :  nobody

:  not any such thing or person

:  not any :  no

:  by no means :  not at all

:  in no way :  to no extent

:  the fifth of the canonical hours