The term "upforce" refers to an act of exerting pressure in an upward direction. However, there are several synonymous phrases that can be used to convey a similar meaning. One can use "lift", which portrays raising or elevating an object. Another alternative is "propel upwards", which signifies a force that moves something higher. Additionally, "boost" can be employed to illustrate an increase in intensity or strength, similar to "upforce". Furthermore, the term "elevate" can be seen as a synonym, implying the act of raising or lifting an item. Overall, these synonyms provide a range of linguistic options to describe the concept of exerting upward force.