The term arises from an acrostic to help, in shorthand, describe the responses of the Council of Dordt to the Remonstrants. I hardly consider it to be something that has to be maintained when the Scriptures don't speak in such terms unilaterally. The Scriptures speak plainly of the people of God giving battle to indwelling sin. Our is not an a-historical faith where we only dwell upon the hidden work of God in regeneration but is a revealed religion where we're called, Today, to hear His voice and harden not our hearts.It is my hope that the phrase "irresistible grace" be maintained for its rightful purpose, to describe the role of God's Spirit upon our hearts
If one conflates Jusitication with the term salvation then this is true but it is not habitual for the Reformed to speak of salvation solely in terms of the work of the Spirit in regeneration and justification. Salvation encompasses sanctification ("being saved") as well as future glorification. A study of the Confessions (which is what defines what is Reformed after all) notes what the means of grace are and how it is the saints' duty to avail themselves of them. A study of the Confessions also notes that we advance and falter in sanctification.Grace, in the sense that it has been understood by Reformed theologians, is not resistible--as it is tied to salvation in particular.
For example, the preaching of the Word is a means of grace. Why would the Confessions (and Directory) encourage us to prepare our hearts for the receiving of the Word if our sloth and indwelling sin was not something that may lead to some want?
In the section I quoted on Sanctification, it is quite clear that there is an irreconcilable war between the Spirit and our indwelling sin. That's the strongest possible language to note that our indwelling sin not only resists but is in complete rebellion against the work of the Spirit through the means of grace. It is a struggle that our union with Christ enables but let us not ignore the clear statements of our Confession that clearly state that a war is ongoing in our sanctification.