disallowable


dis·al·low

D0249900 (dĭs′ə-lou′)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.]
dis′al·low′a·ble adj.dis′al·low′ance n.