A rare or obsolete term possibly referring to pathological lying or compulsive deception.
From Ananias (biblical liar) + -ism (state, condition, practice); likely a learned or medical coining.
If this word ever existed in medical texts, it's long forgotten—it might have been an attempt to create a psychiatric diagnosis for chronic liars!
Complete word intelligence in one call. Free tier — 50 lookups/day.