IdiomDaily LifeEnglish

on the up and up

Meaning: Honest; ethical; fair.

Example: “The charity's accounts are completely on the up and up.”

Origin: American, likely from sports betting, with citations reaching back to 1863 despite the phrase not becoming common until decades later. One theory ties it to boxing, where referees traditionally watched a match from an elevated position to keep the contest honest — "up" here doubling as both a literal vantage point and a stand-in for integrity and fair dealing. Before roughly 1950, "on the up and up" almost always meant open, honest, and legitimate; only in the mid-20th century did a second sense, describing something steadily rising or improving, become the more common usage, leaving the phrase with two related but distinct modern meanings.

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