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disallow (v.)

late 14c., "to refuse to praise" (a sense now obsolete), from Old French desalouer "to blame," from des- "not, opposite of" (see dis-) + alouer (see allow). Meanings "to reject, refuse to receive or acknowledge," also "refuse to allow, refuse to approve or sanction" are from c. 1400. Related: Disallowed; disallowing; disallowance.

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Definitions of disallow from WordNet

disallow (v.)
command against;
Synonyms: forbid / prohibit / interdict / proscribe / veto / nix
From wordnet.princeton.edu