No definitions found for 'immemorial usage'
Perhaps one of these:
immemorial possession,
immemorially,
immune response,
immemorial,
inamorata,
inamorato,
inamorate,
inenarrable,
innumerate,
innumerous,
innumerably,
inamoratos,
ionian order,
inamorately,
innumerability,
innumerable,
in one ear,
innumerableness,
immune reaction,
immemorable,
in amours with