exterior
US /ɪkˈstɪr.i.ɚ/
UK /ɪkˈstɪr.i.ɚ/

1.
2.
extérieur, apparence
a person's outward manner or appearance, especially when contrasted with their true character
:
•
Despite his tough exterior, he was a kind person.
Malgré son extérieur dur, c'était une personne gentille.
•
Her calm exterior hid her inner turmoil.
Son extérieur calme cachait son agitation intérieure.