(adv.) In a manner or to a degree beyond endurance; intolerably; as, a blaze insufferably bright; a person insufferably proud.

abominably agonizingly awfully baldly balefully bitterly blatantly brashly confoundedly cruelly damnably deadly deathly deucedly dissatisfactorily distressingly dolorously dreadfully egregiously excessively excruciatingly exorbitantly extravagantly flagrantly frightfully grievously hellishly horribly improperly inadequately inadmissibly inexcusably infernally inordinately insufferably insufficiently insupportably lamentably miserably nakedly objectionably openly painfully piteously sadly shatteringly shockingly something awful something fierce sorely staggeringly terribly torturously unacceptably unashamedly unbearably unconscionably undesirably unduly unendurably ungratifyingly unpardonably unsatisfactorily unsatisfyingly unsuitably woefully