word to the wise, a

Idioms  

1. Here's good advice, as in A word to the wise: don't walk alone here because these streets are not safe at night. A shortening of A word to the wise is enough, as it was put by Roman writers, this phrase in English dates from the mid-1500s.

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Example Sentences

"It 's only a word to the wise, a notification that you are expected not to run your course without having done something handsome for your fellow-men."

From Roderick Hudson by James, Henry