ambivert
Concise Oxford English Dictionary © 2008 Oxford University Press:
ambivert /ˈambɪvəːt/
▶noun Psychology a person who has a balance of extrovert and introvert features in their personality.
– derivatives
ambiversion noun.
ambiversion noun.
– origin 1920s: from L. ambi- ‘on both sides’, on the pattern of extrovert and introvert.
'ambivert' also found in these Oxford entries:

