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im·pec·ca·ble

(ĭm-pĕkə-bəl)

adj.

1. Having no flaws; perfect. See Synonyms at perfect.

2. Not capable of sinning or not liable to sin.

[Latin impeccābilis : in-, not; see IN-¹ + peccāre, to sin; see ped- in the Appendix of Indo-European roots.]

im·pec′ca·bili·ty n.

im·pecca·bly adv.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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