"apparent uncertainty" is a correct and usable phrase in written English.
It refers to a situation where something seems uncertain or unclear, even though it may not actually be. You can use it when describing a situation where there is a lack of clarity or certainty, but it is not necessarily due to actual confusion or doubt. For example: Despite the apparent uncertainty surrounding the team's chances of winning, the coach remained confident in their abilities. In this sentence, "apparent uncertainty" implies that there may be doubts or questions about the team's chances, but the coach is still confident.
He really wasn't ready for this question, and now his apparent uncertainty about how to respond is being trumpeted as uncertainty about GM safety.
Chief Abbott said it might not have made a difference in how the police approached the youths had the caller's apparent uncertainty been conveyed by the dispatcher.
East, who thought he had a nasty surprise for declarer, and perhaps being influenced by South's apparent uncertainty, doubled, asking for a heart lead.
Nigeria's wasteful passing, allied to their desire to get forward but their apparent uncertainty as to how, infuriated the crowd and encouraged Iran, who occasionally countered, usually though Ghoochannejad.
Martyn Moxon, the county's director of cricket, believes Root's Ashes tour was undermined by England's apparent uncertainty over where he should bat, leading to his surprise omission from the fifth Test in Sydney.
By the end of 1981, opinion polls showed her to be the most unpopular Prime Minister since records began; the only apparent uncertainty was whether the next election would be lost to Labour, or to the recently formed Liberal and SDP Alliance.
On deliberating the evidence many concluded that the apparent uncertainties in the science of PSA testing primarily mean that a raised PSA test result (or subsequent diagnosis of prostate cancer) was a source of significant anxiety without offering any valuable information on how to act: All they're going to say is yeah, you've got it.
Nevertheless, in assessing this current model, the apparent uncertainties about the oxidant-dependent regulation of the activity of RasGEFs via these noncatalytic domains of RasGEFs is not enough to overshadow the significance of the finding of the oxidant-mediated inhibition of the catalytic action of Cdc25 on wt Ras.
Moreover, the clarion call from scientists 'we need to do more research' is guaranteed to boil the blood of some policy-makers, especially when past investment in science has, if anything, added to the level of apparent scientific uncertainty.
It was apparent that uncertainties regarding the threshold at which alcohol could harm the baby prompted many of the midwives to take a cautious stance in relation to advising abstinence from alcohol during pregnancy (see Table 1).
However, significant improvement is apparent in the uncertainty for the shallowest part of the profile (Fig. 9), which indicates that the conductive oceanic crust is better constrained by the new data and thus that the conductivity values are more reliable.
