As nouns the difference between managing and transitionist
is that managing is management while transitionist is someone skilled at coping with, or managing transition in some, or any field.
As a verb managing
is .
As a adjective transitionist is
something, such as a country, undergoing transition from one system or status to another.
transitionist
English
Noun
(
en noun)
someone skilled at coping with, or managing transition in some, or any field
Adjective
(
en adjective)
something, such as a country, undergoing transition from one system or status to another