"Considerable uncertainty" means there is a significant amount of doubt or ambiguity about something.
Sentences with «considerable uncertainty»
But the scientists involved in recommending the caps for the proposal say that there is still considerable uncertainty in both the estimation of existing whale populations and what constitutes a safe or sustainable target. (scientificamerican.com)
However there is still considerable uncertainty about what «social support» actually means when trying to identify moms who may be at risk for postpartum depression. (parentingpod.com)
Accordingly, considerable uncertainty remains about how, when and whether the technology will be adopted. (internationalbanker.com)