D defs.my
Entry 2 senses Webster, 1913

Allowable

/əl-ou'-əb-əl/ · Al·low·a·ble · IPA /əˈlaʊ.əbəl/
01 a. Praiseworthy; laudable.
  1. 1.
    Praiseworthy; laudable.[Obs.]
  2. 2.
    Proper to be, or capable of being, allowed; permissible; admissible; not forbidden; not unlawful or improper; as, a certain degree of freedom is allowable among friends.