aidless baseless defenseless empty exceptionable fatherless faulty flawed friendless groundless guideless helpless idle ill-founded illogical implausible impossible inadmissible indefensible inexpiable insupportable intolerable leaderless motherless objectionable pregnable specious unacceptable unbased undesirable unforgivable unfounded unfriended ungrounded unjustifiable unjustified unpardonable unprotected unreasonable unsound unsuitable unsupportable unsupported unsustainable unsustained unwarranted vain vulnerable weak without basis without foundation