whi·lom (wīləm, hwī-)
Having once been; former: the whilom editor in chief.
At a past time; formerly.
[Middle English, at times, from Old English hwīlum, dative pl. of hwīl, time, while; see kweiə- 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.