Dictionary
in•de•fin•a•ble
Pronunciation: (in"di-fī'nu-bul), [key]—
adj.
not definable; not readily identified, described, analyzed, or determined.
—
n.
something that cannot be defined:
the indefinables of great musicianship. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.