\In"sue*tude\, n. [L. insuetudo, from insuetus
unaccustomed; pref. in- not + suetus, p. p. of suescere to be
accustomed.]
The state or quality of being unaccustomed; absence of use or
habit.

      Absurdities are great or small in proportion to custom
      or insuetude.                            --Landor.