a·cer·bic (ə-sûrbĭk) also a·cerb (ə-sûrb)
2. Sharp or biting, as in character or expression: "At times, the playwright allows an acerbic tone to pierce through otherwise arid or flowery prose" (Alvin Klein).
[From Latin acerbus; see ak- in the Appendix of Indo-European roots.]
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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:
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.