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.

pā̆trĭcus, a, um, adj. [pater], of or belonging to a father, fatherly, paternal; in gram.: patricus casus, the genitive, Varr. L. L. 8, § 66 Müll.; 8, § 67 ib.; 9, § 54 ib; 9, § 67 ib.; 9, § 85 ib.
Hence, adv.: pă-trĭcē, paternally, in the manner of a father (ante-class.): cesso magnifice patriceque ita ero meo ire advorsum? Plaut. Cas. 3, 6, 8.