English
Etymology
Probably "strait and narrow," from wikisource:Bible_%28King_James%29/Matthew#Chapter_7|Matthew 7:14
Idiom
on the straight and narrow
- idiom honest; proceeding according to rules and plans
#: The project would seriously go down the pan if Mrs. Foster weren't here to keep it on the straight and narrow.
See also
go down the pan
Category:English prepositional phrases
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