indistinction

Etymology
First attested in 1624; formed as, after.

Noun

 * 1) The fact of not distinguishing or making distinctions; failure to perceive or make a difference.
 * 2) The condition or fact of not being distinct or different; absence of distinguishing qualities or characteristics; undistinguishableness.
 * 3)  Indistinctness, obscurity, dimness.
 * 4)  Absence of distinction or eminence; obscurity.