on the up-and-up

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Legitimate; honest; upright. idiomatic,informal
    — Before paying any money, make sure the organization is on the up-and-up.
  2. Becoming more successful; on the rise. UK,idiomatic,informal

词形变化

on the up and up alternative

词源

First use appears in the US c. 1863. Its exact origins are uncertain, but it is theorized to have originated in sports betting.
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