The antonyms for the word "dis-allowance" would be allowance, permission, approval, and acceptance. An allowance is the act of allowing something, and permission is the right to do something that is granted to a person. Approval means accepting something as satisfactory or good, and acceptance is the act of accepting something or someone. These words have a positive connotation and refer to the act of granting something rather than denying it. When combined with the prefix "dis-", it turns into the negative form of the word, implying a refusal or rejection of something. Hence, the antonyms of dis-allowance take on the opposite meaning.