Finding just the right word to describe a particularly painful or frustrating situation can be a challenge. "Torturingly" is a great word for describing things that are painfully slow, excruciatingly hard, or just plain frustrating. However, if you're looking to mix things up a bit, there are plenty of synonyms you can try. Some possible alternatives include agonizingly, painfully, tormentingly, gruelingly, relentlessly, and unbearably. These words all convey a sense of struggle or difficulty, but they each have their own unique nuances and connotations, which can help you convey exactly the right tone and mood for your message.