ALLOWABLE
allowable
(adjective) deductible according to the tax laws
permissible, allowable
(adjective) that may be permitted especially as according to rule; “permissible behavior in school”; “a permissible tax deduction”
allowable
(adjective) deserving to be allowed or considered
Source: WordNet® 3.1
Etymology
Adjective
allowable (comparative more allowable, superlative most allowable)
Appropriate; satisfactory; acceptable.
Intellectually admissible; valid; probable.
Able to be added or deducted in consideration of something.
Permissible; tolerable; legitimate.
(obsolete) Praiseworthy.
Synonyms
• (permissible): leveful
Noun
allowable (plural allowables)
permitted amount or activity.
Source: Wiktionary
Al*low"a*ble, a. Etym: [F. allouable.]
1. Praiseworthy; laudable. [Obs.] Hacket.
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.
Source: Webster’s Unabridged Dictionary 1913 Edition