Synonyms for Allowable | Allowable at Open Dictionary of English by LearnThat Foundation

Synonyms for Allowable (same or very similar meaning)

WordNet sense 1 (deserving to be admitted):

admissible

WordNet sense 2 (that may be permitted especially as according to rule):

permissible

WordNet sense 3 (acceptable as a deduction (especially as a tax deduction)):

deductible

From the ODE community, based on WordNetadd/edit