super- +‎ sum

• (Classical Latin) IPA^(key): [sʊˈpɛr.sũː]
• (modern Italianate Ecclesiastical) IPA^(key): [suˈpɛr.sum]

supersum (present infinitive superesse, perfect active superfuī, future active participle superfutūrus); irregular conjugation, suppletive, no passive, no supine stem except in the future active participle, no gerund

1. to remain, to still remain, to be left, left over
   • 29 BCE – 19 BCE, Vergilius, Aeneis 2.567:

     “Iamque adeō super ūnus eram [...].”

     “And now indeed only I was left [...].”
     (Tmesis: “super” separated from “eram.”)

   • c. 4 BCE – 65 CE, Seneca Minor, Epistulae Morales ad Lucilium 1.1.5:

     Nōn putō pauperem cui quantulumcumque superest sat est.

     I don’t regard [anyone as] poor to whom however little still remains is enough.
     (Seneca’s metaphor refers to those people who appreciate the balance of their own mortality.)

2. to survive (usually + dative)

   Synonyms: vīvō, supervīvō

   cladi superesse ― to survive the disaster

   • 27 BCE – 25 BCE, Titus Livius, Ab Urbe Condita I.1:

     Nihil praeter arma et naves superesset

     Had nothing survived but their swords and ships

3. to be in abundance, to abound

   Synonyms: abundō, flōreō, niteō, affluō, superfluō

   Antonyms: careō, egeō, dēsum, dēlinquō, deficiō, cessō

4. to be superfluous
5. to support, advocate (for), defend

Despite there being a passive for "to survive" in English, this verb is a completely active verb. Therefore, "to be survived" is expressed by reversing the subject and object.

¹Old Latin or in poetry.

• “supersum”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
• “supersum”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers
• “supersum”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.
• Dizionario Latino, Olivetti