On the up and up and True-blue

True-blue and on the up and up are semantically related. in good topic. In some cases you can use "True-blue" instead an adjective phrase "On the up and up", when it comes to topics like true, accurate, loyal.

True-blue adjective - Firm in one's allegiance to someone or something.

On the up and up and true-blue are semantically related. Sometimes you can use "On the up and up" instead an adjective phrase "True-blue".