tr.v. dis·al·lowed, dis·al·low·ing, dis·al·lows
1. To refuse to allow: "[The government] disallowed his aging and dying parents any reunion with their only child" (John Simon).
2. To reject as invalid, untrue, or improper.
[Middle English disallowen, from Old French desalouer, to reprimand : des-, dis- + alouer, to approve; see ALLOW.]
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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.