American Idioms – Idiom Wizard Lists Over 5,500 Idioms & Slang Descriptions

On the up-and-up


Legitimate. Legal. Aboveboard. ‘Up’ is used to imply approved or certified as opposed to a lowly, unscrupulous enterprise.  (Compare to Straight shooter or Straight arrow.)

“Is her business on the up-and-up or is it just a facade for selling drugs?”

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