Difference between Unlikely and Insupportable

UNLIKELY vs INSUPPORTABLE: NOUN

Such as cannot be reasonably expected; improbable: as, an unlikely event.
Not holding out a prospect of success or of a desired result; likely to fail; unpromising.
Not calculated to inspire liking or affection; not likable or lovable.
In an unlikely manner; with no or little likelihood; improbably.

Irresistible.
Not supportable; incapable of being supported or borne; insufferable; intolerable.

Impossible, Reluctant, Plausible, Inconceivable, Doubtful, Likely, Outside, Remote, Last, Unbelievable, Supposed, Unconvincing, Farfetched, Implausible, Improbable

Unendurable, Absurd, Unlikely, Unacceptable, Unsustainable, Insufferable, Unsupportable, Unbearable, Untenable, Intolerable, Inexcusable, Unwarrantable, Unwarranted, Unjustifiable, Indefensible

Impossible, Reluctant, Plausible, Inconceivable, Doubtful, Likely, Outside, Remote, Last, Unbelievable, Supposed, Unconvincing, Farfetched, Implausible, Improbable

Unendurable, Absurd, Unlikely, Unacceptable, Unsustainable, Insufferable, Unsupportable, Unbearable, Untenable, Intolerable, Inexcusable, Unwarrantable, Unwarranted, Unjustifiable, Indefensible

Obviously, in my case it is EXTREMELY unlikely.
John Mark might not be unlikely at all.
Spain but I think this one is unlikely.
Discountable effects are those extremely unlikely to occur.
NBA comeback may seem unlikely at this point.
Russia investigation even though his election seemed unlikely.
It indicates the null hypothesis is very unlikely.
Just as people who borrow murder mysteries are unlikely to be murderers, so those seeking information about terrorism are unlikely to be terrorists.
When looking for solutions to problems they are unlikely to arbitrarily rule out any possibilities, even if they may seem unlikely to others.
Responses can be: very likely, somewhat likely, neither likely or unlikely, somewhat unlikely and very unlikely.

No, he could not live a Moment under that Apprehension, too insupportable to be borne.
Please be sure to comment and correct thoseof the latter you think are insupportable.
However predictable in its application, such an extreme rule would be insupportable.
But I declare, the actions of this black woman are really insupportable.
Evolution is absolutely insupportable by any established means of legitimate scientific inquiry.
He was like a laden wagon, groaning under an almost insupportable load.
Is there any thing so insupportable to our sex as pity!
The committee believes these reasons are either irrelevant or insupportable.
This claim is wildly inflated and based on insupportable assumptions.
In my view, these approaches are legally insupportable.