1 (of theories etc) incapable of being defended or justified [syn: untenable]
2 incapable of being justified or explained [syn: insupportable, unjustifiable, unwarrantable, unwarranted]
- Not defensible; not capable of being defended; vulnerable.
- Incapable of being justified of excused; inexcusable; unpardonable.
- Incapable of being explained; untenable; insupportable; invalid.