keep to the straight and narrow

keep to the straight and narrow

To maintain a morally upright way of life; to only make choices that are considered morally or legally correct. Now that I have a conviction on my record, I really have to keep to the straight and narrow going forward. My father was a very religious man, and he kept to the straight and narrow until the day he died.
See also: and, keep, narrow, straight

keep to the straight and narrow

Fig. to behave properly and correctly; to stay out of trouble. If you keep to the straight and narrow, you can't help but win in the end. I always keep to the straight and narrow.
See also: and, keep, narrow, straight