have a good head on shoulders

have a good head on (one's) shoulders

To be capable of making sound, responsible 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.
See also: good, have, head, on, shoulder
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

have a good head on one's shoulders

Fig. to have common sense; to be sensible and intelligent. Mary doesn't do well in school, but she's got a good head on her shoulders. John has a good head on his shoulders and can be depended on to give good advice.
See also: good, have, head, on, shoulder
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

good head on one's shoulders, to have a

To be intelligent or shrewd. This term began life in the sixteenth century as having an old head on young shoulders, meaning a young person who has an old person’s wisdom. Sometime in the course of time “old” was clarified into “good,” although in the nineteenth century it was also put as simply having a head on one’s shoulders.
See also: good, have, head, on
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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