Not appropriate or suitable; improper. Also of times, etc.: Unseasonable.

Of an accusation or penalty: Having no just cause; brought against or inflicted on an innocent person. Obsolete.

Incapable of being defended in argument, maintained, or vindicated; unjustifiable, inexcusable.

(un-, prefix1 affix 2).

Incapable of making defence; defenceless.

That cannot be shown to be just, right, or reasonable; lacking justification.

(un-, prefix1 affix 1b.)

(un-, prefix1 affix 1.)

Of an action, opinion, etc.: not clearly right, proper, or appropriate; lacking justification or good cause; unwarranted.

Incapable of being justified, unjustifiable.

That cannot be supported or sustained by grounds or reasons; unjustifiable, indefensible.

Not deserved; unwarranted.

Not admitting of support or defence; indefensible.

Without justification, unwarrantable. rare.