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.

com-mŏrĭor (conm-), mortuus, 3,

  1. I. v. dep. n., to die with or at the same time with one (mostly post-Aug.; not in Cic.); constr. with cum, with the dat. or absol.
          1. (α) With cum: in acie cum Arunte commortuus est (Brutus), Liv. Epit. 2; Val. Max. 6, 8, 2.
          2. (β) With dat.: obviam ire et commori hostibus, Sall. H. 1, 89 Dietsch: hostibus suis morte suā, Flor. 1, 18, 17; so, tibi, Sen. Ep. 77, 13: simul tibi, Vulg. Marc. 14, 31.
          3. (γ) Absol., Plin. 8, 11, 11, § 32; 10, 21, 24, § 47; Vulg. Ecclus. 19, 10.
            Hence, Commŏrĭentes, the title of a comedy of Piautus, now lost, composed in imitation of the Συναποθνήσκοντες of Diphilus, Ter. Ad. prol. 7, and Prisc. p. 725 P. (acc. to Att. ap. Gell. 3, 3, 9, not genuine).
  2. II. Trop.: duo venena commoriuntur, i. e. their effects vanish together, Plin. 27, 2, 2, § 5.