dubious
Their beliefs about the world rely on dubitable information.
It seems dubitable that he would have made a speech like that.
He was able to show that these beliefs were dubitable.
The lawyers need to exclude any evidence that is in any way dubitable.
These figures may be dubitable because people make errors in calculating.

SMART Vocabulary: related words and phrases

Uncertainty
amorphous
be neither fish nor fowlidiom
blurringly
blurry
circumstantial
indeterminate
indeterminately
insecurely
insecurity
interrogatively
murky
shakiness
shallowly
slippery
spec
squishy
wavery
wifty
wishy-washy
you never knowidiom