assuetude
noun
as·sue·tude
ˈaswēˌtüd,
-ē‧ˌtyüd
plural -s
: accustomedness, habit
Word History
Etymology
Latin assuetudo, from assuetus, past participle of assuescere to be accustomed, from ad- + suescere to become accustomed; akin to Latin suus one's own