on the up-and-up

== English == === Alternative forms === on the up and up === Etymology === First use appears in the US c. 1863. Its exact origins are uncertain, but it is theorized to have originated in sports betting. === Pronunciation === === Adjective === on the up-and-up (informal, idiomatic) Legitimate; honest; upright. Synonyms: above board, bona fide (UK, informal, idiomatic) Becoming more successful; on the rise. ==== Translations ==== ==== See also ==== === References ===