That can be ignored. / (statistics, of missing data) Unrelated to the parameters being estimated

Anything that can be ignored.

plural of ignorable

One who ignores.

To deliberately not listen or pay attention to. / To pretend to not notice someone or something. / (obsolete) Fail to notice. / (obsolete) Not to know.

plural of ignorance

Third-person singular simple present indicative form of ignore

The condition of being uninformed or uneducated; lack of knowledge or information. / (religion, in the plural) Sins committed through ignorance.

Unknowledgeable or uneducated; characterized by ignorance. / Not knowing (a fact or facts), unaware (of something). / (slang) Ill-mannered, crude. / (obsolete) unknown; undiscovered

One who is ignorant.