When it comes to expressing the act of inserting something into something else, there are various synonyms that can be used instead of "stuffing in." Some of these synonyms include pushing in, cramming in, squeezing in, wedging in, packing in, embedding, inserting, and implanting. Each of these words can be used to convey the idea of forcing or placing something inside of a tight space or cavity. Depending on the context, some synonyms may be more appropriate than others. For instance, "embedding" might be used when talking about embedding an object in a material while "packing in" might be used when talking about tightly fitting things into a container or luggage.