1610s, "make easy, render less difficult," from French faciliter "to render easy," from stem of Latin facilis "easy to do," from facere "to do" (from PIE root *dhe- "to set, put"). Related: Facilitated; facilitates; facilitating.
<a href="https://www.etymonline.com/word/facilitator">Etymology of facilitator by etymonline</a>
Harper, D. (n.d.). Etymology of facilitator. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/facilitator