"Packs in" has several synonyms that can be used to convey the same meaning. The phrase refers to the act of fitting or crowding something or someone into a tight or limited space. Some synonyms for "packs in" are cram, squeeze, stuff, jam, fill, crowd, and compress. These words can be used in various contexts, such as packing a suitcase, stuffing a turkey, filling a jar with sand, or squeezing into a tight space. When using these synonyms, it is essential to consider the appropriate context to convey the intended meaning correctly. In summary, "packs in" has several synonyms that can add more variety and depth to one's writing or speaking.