indefensible vs unwarrantable

indefensible and unwarrantable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
indefensible	No	Yes	No	No
unwarrantable	No	Yes	No	No

As adjectives, indefensible and unwarrantable are synonyms defined as:

indefensible and unwarrantable: incapable of being justified or explained

Other synonyms of indefensible include insupportable, unjustifiable, unwarranted.

indefensible (adjective)	unwarrantable (adjective)
incapable of being justified or explained	incapable of being justified or explained
(of theories etc) incapable of being defended or justified
not able to be protected against attack