The word "un-pardonably" means something that is not forgivable or cannot be excused. Some of its synonyms include blameworthy, reprehensible, inexcusable, indefensible, unjustifiable, and unforgivable. These words represent something that is extremely wrong or immoral, and cannot be justified or pardoned. Other synonyms for un-pardonably include unacceptable, intolerable, and outrageous, which indicate that the action or behavior is unacceptable and should not be tolerated. The implication of these synonyms is that the offense committed is exceedingly severe, and no amount of pleading or apology can make up for the damage done. Using synonyms for "un-pardonably" can help convey the seriousness of the situation in a more concise and effective manner.