Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

aeternālis, e, adj. [aeternus], enduring forever, everlasting (often in inscrr.): aeternali somno sacrum, i. e. to death, Inscr. Grut. 752, 3: domus, Inscr. Orell. 4518: luctus, ib. 4604: memoria, ib. 200: lex temporalis et aeternalis, Tert. adv. Jud. 6.
Adv.: aeternālĭter, forever (late Lat.), Ad. ad H. Prud. March, p. 245.