(Sanskrit) Literally without (a-) knowledge (-jnana). Ajnana is a term used in Hindu philosophy to refer to a state of consciousness that lacks perception of reality, and is thus the cause of suffering.
"How foolish we are! We often think that we never do all the foolishness and perversities that we see others do; this is why we arrive at the conclusion that we are magnificent persons. Unfortunately, we do not see the foolishness and wretched things we do."