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in·vin·ci·ble

(ĭn-vĭnsə-bəl)

adj.

Incapable of being overcome or defeated; unconquerable.

[Middle English, from Old French, from Latin invincibilis : in-, not; see IN-¹ + vincibilis, conquerable; see VINCIBLE.]

in·vin′ci·bili·ty, in·vinci·ble·ness n.

in·vinci·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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