Exact Match:
- indefensible
- incapable of being justified or explained
- (of theories etc) incapable of being defended or justified
- not able to be protected against attack
Synonyms:
- exceptionable,
- impossible,
- inadmissible,
- inexcusable,
- inexpiable,
- intolerable,
- irremissible,
- objectionable,
- unacceptable,
- unallowable,
- unconscionable,
- undesirable,
- unforgivable,
- unjustifiable,
- unpardonable,
- unreasonable,
- unsuitable,
- untenable,
- unwarrantable