ˈintrovertishadj. said of such a person, his activities, etc.
ΘΚΠ
the mind > mental capacity > psychology > theory of psychoanalysis > libido > transfer of feelings > turning inwards > [adjective]
introverted1915
introversive1923
cerebrotonic1937
introvertish1946
1946 R. P. Basler in W. S. Knickerbocker 20th Cent. Eng.iii. 392 In the snugness of introvertish isolation, there is always time, an eternity for continual deception and indecision.