A "moderating force" refers to something or someone that helps to maintain balance, control, or calmness in a situation or relationship. It acts as a stabilizing influence or a middle ground between extreme viewpoints or actions. Full definition
He has become an important moderating force inside of late, but a new COO would obviously outrank him. (recode.net)
You should swirl your brush around in the mixture and also press down with moderate force so that it exposes the base of the bristles to the soap mixture. (primandprep.com)
Goertz v. Kujala, 2006 BCSC 667 the claimant suffering neck, back and shoulder soft tissue injuries in a rear - end collision of moderate force. (holnesslawgroup.com)