agerasia/ˌæɡ.əˈɹeɪ.ʒə/EtymologyFrom Ancient Greek ἀγηρασία (agērasía, “eternal youth”). Compare gero-, athanasy.agerasia means An outward appearance more youthful than one's true age. Lexicurio rates it Rare gem — a strength score of 78 out of 100.nounAn outward appearance more youthful than one's true age.