observe
Niels Bohr believed that atomic particles were unobservable because anything you did to try to measure them would cause them to alter their behaviour.
There was evidence of an unobservable malfunction.
Because there are so many other variables, the change in consumer trends when a single product is released to the market is unobservable.
He argues that the agencies themselves do not have much incentive to achieve results, since the results are mostly unobservable.

SMART Vocabulary: related words and phrases

Indistinct & invisible
blur
blurrily
blurry
cloudily
fuzzily
fuzziness
fuzzy
indiscernible
melt
melt (away) into something
not see hide nor hair of someoneidiom
smudged
super-subtle
swimmy
unapparent
unclear
vague
vapory
viewless
washy

Examples of unobservable

unobservable
Unfortunately, this simple analysis does not imply that incorporeals are unobservable.
Learning strategies are for the most part unobservable, though some may be associated with an observable behavior.
A shortcoming of the concept is that it requires the construction of an "unobservable" natural real rate series.
We can easily introduce an idiosyncratic component in each investor's nontraded income to make it unobservable to other investors.
The technical efficiency scores rely on the value of the unobservable distance function predicted.
In this situation, voters face a standard inference problem of predicting the unobservable type (whether competent or not) of the incumbent from the observable policy.
Stable markings describe observable states, whereas the presence of one or more zero tokens in a given marking makes it unobservable.
Indeed, in econometric analysis, space-time markers are often used as proxies for these unknown, sometimes unobservable, conditions.
The events for which probabilities need to be assessed in a belief network are often unobservable, making feedback impossible.
Notwithstanding its positivistic rhetoric, mainstream research programs in economics, such as neoclassical economics, have traditionally relied heavily upon unobservable, typically mathematical, structures.
In particular, true quantities are unobservable and are related to the observed ones by multiplicative error terms.
The pivotal consideration that permits essentially unobservable items to be observed is that things need not appear as they essentially are.
Being essentially imperceptible, there is something about the very nature of incorporeals that renders them unobservable.
Nor can statistical analyses choose among unobservable causal mechanisms when one or more appear to have left footprints in the data.
This question cannot be answered directly, because the actual series are unobservable.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.