"Low sensitivity" refers to a situation where someone or something is not easily affected or bothered by certain things. They have a lesser response or reaction to a particular stimulus or situation. Full definition
Higher estrogen levels, regardless of the person's sex, almost always meant increased sensitivity to the images, while higher levels of testosterone were most frequently associated with lowered sensitivity. (mindbodygreen.com)
This all points to a very low sensitivity for or a low forcing of aerosols. (realclimate.org)
Such a modified model would have much lower sensitivities to CO2 and aerosols than the existing models. (climateaudit.org)