If you're looking for synonyms for the phrase "soporific long weekend," there are several options to choose from. For starters, instead of using the word "soporific" (which means sleep-inducing or boring), you could try using "relaxing," "leisurely," or "restorative" to describe your weekend. If you're looking for alternatives to "long weekend," you could use "extended break," "holiday retreat," or "extended getaway" to describe the time off. Whatever words you choose, the important thing is to focus on the rest and relaxation that you hope to achieve during your time away from work.