The term 'AIN'T, PROPERLY' is a phrase used to describe something that is not proper or acceptable. The two crossword solutions for this term are 'ARENT' (5 letters) and 'ISNT' (4 letters). Both of these words are contractions of the verb 'to be' and are used to indicate that something is not proper or acceptable. They are often used in informal speech and writing, but are considered incorrect in formal contexts.