The fact of not distinguishing or making distinctions; failure to perceive or make a difference.

The state of being confused, unclear, or blurred; an instance of this.

The fact of not discriminating or making distinctions; the condition of not being discriminated; absence of distinction; want of discrimination or…

Wandering, aimless activity. Also: confusion. Obsolete.

Want of discernment.

The action of muddy, v. (in various senses); an instance of this.

(under-, prefix1 affix 5(b).)

The confounding or mistaking of one for another; failure to distinguish. Const. of (things), of one with another, between (things).

With up. Cf. to mix up at mix, v. phrasal verbs.

The action of confound, v.

figurative. Inability to perceive, experience, or distinguish between certain perspectives, moral choices, emotions, etc. Frequently with…

The action of muddling, mixing, disordering, etc. Also: an instance of this; mixture, confusion, disorder.

the quality of being indiscriminate.

Undiscriminating quality.

The action of lump, v.3 in various senses.