If it looks like a duck, swims like a duck, and quacks like a duck, then it's probably a duck

Meaning: When multiple observable qualities align, trust the evidence rather than disputing the apparent nature of something.

Origin: The "duck test," a form of reasoning from obvious evidence. The poet James Whitcomb Riley may have coined an early version, and a union leader, Emil Mazey, used it in 1946. The U.S. ambassador to Guatemala, Richard Cunningham Patterson Jr., popularized it in 1950 when accusing that country's government of communism.

More proverbs about Wisdom

From our idioms

Browse all idioms →

← Back to Proverbs