Allowable
Part of speech: adjective
Definition: Appropriate; satisfactory; acceptable. Intellectually admissible; valid; probable. Able to be added or deducted in consideration of something. Permissible; tolerable; legitimate. Praiseworthy.
Admissible
Part of speech: adjective
Definition: capable or deserving to be admitted, accepted or allowed; allowable, permissible, acceptableDescribing a heuristic that never overestimates the cost of reaching a goal.