cut corners

[cut corners] {v. phr.} 1. To take a short way; not go to each corner.

He cut corners going home in a hurry.

2. To save cost or effort; manage in a thrifty way; be saving.

John's father asked him to cut corners all he could in college.

3. To do less than a very good job; do only what you must do on a job.

He had cut corners in building his house, and it didn't stand up well.