ignorable adjective 3noun 1forms 3 adjective3 •Able to be ignored.Users on this Internet chat system are ignorable by right-clicking the user name. •Insignificant or trivial enough to be ignored. •Unrelated to the parameters being estimatedAnother pertinent distinction in Rubin's missing data classification system is whether the missing data mechanism is ignorable. — 2007 noun1 •Anything that can be ignored. formsignorables · more ignorable · most ignorable