honeymoon period

plural honeymoon periods

1. A relatively brief period when a new leader is given greater leeway with respect to changes they wish to make.

   U.S. Presidents usually get a lot done at the very beginning of their terms, when they have a honeymoon period with Congress.

2. businessA relatively brief period when a new loan has a low introductory interest rate that features prominently in advertising.
3. The length of time at the start of something new, particularly a new job, in which mistakes may be overlooked.

   He said that, had it not still been my honeymoon period, I would have been fired.

4. The early part of an intimate relationship, during which the couple are infatuated with each other.