Break in
Definition 1 of 4
Pro Tip 1/3Criminal Connotation
The phrase often implies illegal activity, especially theft or property damage. 
The neighborhood was on edge after several houses were broken into.
Pro Tip 2/3News Reports
Commonly used in news stories about crimes involving unauthorized entry. 
Police are investigating after a break-in at the local school.
Pro Tip 3/3Emotional Impact
When used, it may evoke feelings of violation or anger in the context of burglary. 
The family felt violated following the break-in.