— indeclinableness , n. — indeclinably , adv.
/in'di kluy"neuh beuhl/ , adj. Gram.
not capable of being declined; having no inflected forms: used esp. of a word belonging to a form class most of whose members are declined, as the Latin adjective decem, "ten."
[ 1400-50; late ME indeclinabilis unchangeable, inflexible. See IN- 3 , DECLINABLE ]