interfere in something—intervene in smth. which is not one’s concern:
- They may interfere in elections by the use of corrupt means to bribe or intimidate the electors.
interfere with something—
1. meddle with smth., making unauthorized changes, etc.:
- The dispatcher warned the employee that he would be fired if he again interfered with the dispatch system.
2. (of events, circumstances, etc.) hinder, obstruct, or prevent smth.:
- The recent hurricane interfered with our plans so we have rescheduled the trip for the coming week.