summerus
Could not find submerum in Logeion dictionaries.
submerum Adjective: neuter nominative singular, Adjective: neuter accusative singular, Adjective: neuter genitive plural, Adjective: neuter vocative singular, Adjective: masculine genitive plural, Adjective: masculine accusative singular of summerus
sum-mĕrus (subm-), a, um, adj.,
- rather pure: vinum, Plaut. Stich. 1, 3, 116 (270).