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An honest, ethical person who makes good decisions. Kristen was often mocked by her peers for being a straight arrow who always followed the rules and stayed out of trouble.
a straight arrowmainly AMERICAN
If you describe someone as a straight arrow, you mean that they are very conventional, honest, and moral. I was very much a product of my environment. I was very traditional, a real straight arrow in lots of ways. Several friends describe Mr. Menendez as `a straight arrow' who rarely drank and was close to his family. Note: You can use straight-arrow before a noun. It was impossible to imagine such a well-scrubbed, straight-arrow group of young people rioting over anything.
a straight arrowan honest or genuine person. North American
n. an honest person; a law-abiding citizen. (see also straight shooter.) Willy is really a straight arrow at heart—as long as he’s not around Max. Max is not a straight arrow. Slime is more like it.
A conventional and ethical person. As morally straight as an arrow, that person is likely to be dull. As used in colleges during the mid- 20th century, a straight arrow wasn't the type who'd get drunk or use drugs. If female, her necking, petting, or going further was out of the question.