ALLOWABLE Synonyms: 46 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/allowable
WEBSynonyms for ALLOWABLE: acceptable, permissible, permitted, admissible, legal, okay, mandatory, authorized; Antonyms of ALLOWABLE: prohibited, forbidden, impermissible, unacceptable, proscribed, barred, inadmissible, intolerable
DA: 22 PA: 15 MOZ Rank: 2