Appropriate; satisfactory; acceptable. / Intellectually admissible; valid; probable. / Able to be added or deducted in consideration of something. / Permissible; tolerable; legitimate.

permitted amount or activity.

The state of being allowable; legitimacy; permissibleness.

plural of allowable

plural of allowance

Permission; granting, conceding, or admitting / Acknowledgment. / An amount, portion, or share that is allotted or granted; a sum granted as a reimbursement, a bounty, or as appropriate for any purpose

(transitive) To put upon a fixed allowance (especially of provisions and drink). / (transitive) To supply in a fixed and limited quantity.

(transitive) To grant, give, admit, accord, afford, or yield; to let one have. / (transitive) To acknowledge; to accept as true; to concede; to accede to an opinion.

In an allowable manner.

present participle of allow