When we hear the phrase "busy oneself," the first thing that comes to mind is engaging in activities that occupy us. However, there are several other synonyms that express similar meanings. One possible alternative is "occupy oneself," which also refers to engaging in tasks and projects. Another possible synonym for "busy oneself" is "engross oneself," which suggests being absorbed and deeply involved in a particular activity. A third option is "distract oneself," which refers to engaging in activities to avoid boredom or unwanted thoughts. Lastly, "immerse oneself" is a synonym that indicates complete and intense involvement in a particular task or activity.