Blank sightless eyes closed speechless mouth destined eternally to rigid frigidity (frigor mortis). Impenetrable, not an orifice in sight. Inviolably inviolate body unassailably confined within a wall of stone ("leda, lada, aflutter afraida, so does your girdle grow!").
Source: wiktionary
Contrary to his assertion, however, virtually all relevant researchers say the link between CFCs and ozone depletion is based on unassailably solid scientific evidence.
Source: wiktionary
[H]owever hard she pushed the tough-talkin' shtick, she remained doe-eyed, glowing and somehow unassailably demure.
Source: wiktionary