Difference between Unreasonable and Untenable

UNREASONABLE vs UNTENABLE: ADJECTIVE

Not showing good judgment
Not reasonable or agreeable to reason; irrational.
Synonyms Absurd, Silly, Foolish, etc. (see absurd), obstinate, wrong-headed, extravagant, unfair, unjust, extortionate.
Inconvenient.
Not listening to or acting according to reason; not guided by reason; not influenced by reason.
Not endowed with reason; irrational.
Exceeding the bounds of reason; beyond what is reasonable or moderate; exorbitant; immoderate: as, an unreasonable price.

Not tenable; that cannot be held in possession: as, an untenable post or fort. That cannot be maintained by argument; not defensible: as, an untenable doctrine.

Senseless, Incongruous, Silly, Indefensible, Inordinate, Undue, Foolish, Untenable, Excessive, Absurd, Irrational, Illogical, Unrealistic, Unjustified, Unwarranted

Unaffordable, Insupportable, Unmanageable, Unsupportable, Unfeasible, Unviable, Unbearable, Precarious, Tenable, Unworkable, Unsustainable, Unacceptable, Intolerable, Unreasonable, Indefensible

Senseless, Incongruous, Silly, Indefensible, Inordinate, Undue, Foolish, Untenable, Excessive, Absurd, Irrational, Illogical, Unrealistic, Unjustified, Unwarranted

Unaffordable, Insupportable, Unmanageable, Unsupportable, Unfeasible, Unviable, Unbearable, Precarious, Tenable, Unworkable, Unsustainable, Unacceptable, Intolerable, Unreasonable, Indefensible

Disarm unreasonable and difficult behavior when correctly used.
Therefore all progress depends on the unreasonable man.
An attorney shall not make an agreement for, charge, or collect an unreasonable fee or an unreasonable amount for expenses.
It would, for example be unreasonable to insist on compliance with the clause if it was unreasonable or impossible for the person to comply.
Whether a behaviour is unreasonable can depend on whether a reasonable person might see the behaviour as unreasonable in the circumstances.
Charter arguments, such as unreasonable delay, the right to be secure against unreasonable search and seizure, and the right to counsel.
You can definitely sue for unreasonable delays if you can prove that the delays are, in fact, unreasonable.
The traveller complained that the arrest was unreasonable and that various actions of the involved police officers were unreasonable.
An unreasonable comprehensive doctrine is unreasonable in the sense that it is incompatible with the duty of civility.
The Right Against Unreasonable Search and Seizure The Fourth Amendment protects persons from unreasonable searches and seizures.

The Plaintiff says that this contention is untenable.
Your reading seems unnecessarily forced and simply untenable.
But such vague, indiscriminate argument is just untenable.
However, the above view is untenable in law.
Deep fakes will make things like zoom untenable.
The political atmosphere became increasingly poisoned and untenable.
Untenable Nothing could be further from the truth.
That should be an untenable situation for him.
Discretion is not abused unless it is exercised on untenable grounds or for untenable reasons.
Discretion is abused where it is exercised on untenable grounds for untenable reasons.

Is it untenable to have a leader and Deputy Leader from Queensland?
Does the Conservation Authorities Act stretch the interpretation to untenable limits?
Is it untenable for Dan Snyder to own the Washington football team?
Are long-standing staffing issues becoming untenable for workers in Saskatchewan?
What is the release date of untenable by bad moves?
Can I sue for loss of earnings or untenable position?
Are current housing market conditions untenable for British Columbians?
When is psychiatric hospitalization an untenable option?