adj.
- Having no flaws; perfect. See synonyms at perfect.
- Incapable of sin or wrongdoing.
[Latin impeccābilis : in-, not; see in-1 + peccāre, to sin.]
impeccability im·pec'ca·bil'i·ty n.impeccably im·pec'ca·bly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.