Difference between Questionable and Deniable

QUESTIONABLE vs DENIABLE: ADJECTIVE

Of dubious respectability or morality
Problematic; open to doubt or challenge
Liable to question; subject to be doubted or called in question; problematical; doubtful; suspicious.
Admitting of being questioned; inviting, or seeming to invite, inquiry.
Of dubious morality or respectability.
Not yet determined or specified.
Open to doubt or challenge; problematic.
Able to be refuted
Subject to question

Liable to question; suspicious; doubtful; uncertain; disputable: as, the deed is of questionable authority; his veracity is questionable.
Capable of being questioned or inquired of; inviting or seeming to invite inquiry or conversation.

Supposed, Apocryphal, Deniable, Suspect, Refutable, Alleged, Equivocal, Suspicious, Fishy, Problematical, Shady, Problematic, Debatable, Doubtful, Dubious

Supposed, Apocryphal, Deniable, Suspect, Refutable, Alleged, Equivocal, Suspicious, Fishy, Problematical, Shady, Problematic, Debatable, Doubtful, Dubious

Histopathology should be considered to discern questionable lesions.
Implement procedures for follow up on questionable cases.
Any questionable purchases are reimbursed by the employees.
The value of determining rectal temperature is questionable.
Report: Steph Curry, Kevin Durant questionable tomorrow vs.
Might some of those restrictions be constitutionally questionable?
The evidence behind this dietary strategy is questionable.
Propose removing this verbiage as it is questionable whether this is relevant given the amount of information available and possibly ethically questionable.
Do report coupons you see that look questionable by sending any valuable information you have about where you saw or received a questionable coupon.
We have software on all our electronics that alerts each other if we go to questionable sites or search questionable content, etc.

One agency directive found to be available, the other deniable because disclosure could endanger life or safety.
That 1971 saw some of the goriest bloodshed in recent history is not deniable.
SAS trooper Nick Stone is now working for the intelligence service on deniable operations.
Bitcoins from him on the exchange, almost certainly through a deniable proxy trading account.
Not all narcissists abuse physically, but most do, often in subtle, deniable ways.
With a vampire organization, it might involve deniable Caitiffs startling all the quail.
Also, we reference a number of real, deniable operations within the game.
Deniable Authentication Protocol with Certificates Based on Elliptic Curve Cryptography.
Got hymn it is a thing most wonderful deniable ops?
Make sure that he sees the deniable packs!