opem
opem is a Latin form of ops, meaning “help, power; (pl.) resources, wealth”. It is the accusative singular feminine noun.
Found 376 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Civili 1.79: … suos ascendentes protegebant; cum vallis aut locus declivis suberat, neque ei, qui antecesserat, morantibiis opem ferre poterant, equites vero ex loco superiore in aversos tela coniciebant, tum magno erat in periculo res. R …
Vergil, Aeneid 10.371: Opemque meam, patriae quae nunc subit aemula laudi,
All forms of ops (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.