Difference between Questionable and Refutable

QUESTIONABLE vs REFUTABLE: 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

Able to be refuted, or shown to be false.
Admitting of being refuted or disproved; capable of being proved false or erroneous.
Able to be refuted

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.

The indorsement creates a refutable presumption regarding the date and time that the document was delivered to the court.
Isrealis was easily refutable by what CAMERA said about his visit to Lebanon and the statements CAMERA quoted him as saying.
This is also refutable by declarations published by leaders of the jihad movement in Egypt who have recanted their views.
Onlyone refutable hypothesis emerges: Low levels of GDP per capita and high levels ofcorruption will be observed together.
Waters, that report contained some specific allegations that were either verifiable or refutable.
Better yet, invest in stock issued by refutable banks even when ROI is less.
Take notes on any refutable information you can use to draft your appeal letter.
While your trolling was easily refutable, I challenge anyone to deny that.
Moreover, a natural science theory has to be refutable and generalizable.
Universal Grammar is simply a way of avoiding making refutable claims.