Lewis & Short

ĭn -exstinctus (in-ext-), a, um, adj., unextinguished, unextinguishable (Ovidian).

  1. I. Lit.: ignis, Ov. F. 6, 297.
  2. II. Trop.: fames, unappeasable, Ov. Ib. 6, 428: nomen, imperishable, id. Tr. 5, 14, 36: libido, insatiable, id. F. 1, 413.