supernal UK /suːˈpɜː.nəl/US /suˈpɝ.nəl/ adjective2 •Pertaining to heaven or to the sky; celestial. •Exalted, exquisite, superlative.Even the sunlight assumed a supernal glamour, as if some special atmosphere or exhalation mantled the whole region. — 1931 formsmore supernal · most supernal