Teething troubles are the initial difficulties and challenges that arise when starting something new. However, there are other synonyms that convey the same meaning, such as initial hiccups, startup glitches, early obstacles, and beginning difficulties. These synonyms can be used in place of teething troubles to describe the initial challenges encountered during the process of initiating a new project, venture, or idea. Whatever synonym one chooses to use, it is important to acknowledge that encountering initial problems and setbacks is a normal part of the process of starting something new and should not cause too much alarm.