"Wast on the up and up" is a colloquial expression that primarily derives from British English. It is derived from the phrase "on the up and up" which means something is legitimate, honest, and genuine. When "wast" is added, it refers to a place that was not legitimate or above board before, but has now become so.
This expression implies that there has been a noticeable improvement in a particular situation, establishment, or individual's behavior, suggesting that it has undergone positive changes and can now be trusted or considered reliable. The phrase often pertains to asserting the integrity or credibility of a person, organization, or a particular location.
The word "wast" in this context refers to a description of something that used to be undeveloped, dubious, or questionable, and it has now transformed into being trustworthy, reputable, or valid. The use of "wast" indicates the previous state of the subject in question, highlighting the evident improvement or progress made to reach the current respectable state.
Overall, the phrase "wast on the up and up" confirms the transformation of a person, place, or entity from a questionable or dubious status to one that is now considered above board, authentic, and dependable.
