a good head on (one's) shoulders

a good head on (one's) shoulders

A proclivity for making sound, responsible, and ethical decisions. Joe has a good head on his shoulders, so I highly doubt that he would go to Vegas and gamble all his money away. A: "I worry about the negative influences Sarah will be surrounded by in college." B: "Don't worry, she's got a good head on her shoulders. She'll do just fine."
See also: good, head, on, shoulder
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