adjective.Perfect, without faults, flaws or errors
adjective.Incapable of wrongdoing or sin; immaculate
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
without fault or error
adjective.
not capable of sin
Word Usage
"The list continued to intrigue me, and I began to read about the piece, which does indeed appear to be an essay, written in impeccable academic style."