naproxen naprosyn • naproxen sodium · · · Info · Definitions · Synonyms · Characters · · naproxen · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) a nonsteroidal anti-inflammatory drug (trade name Naprosyn) used in the treatment of arthritis and musculoskeletal inflammation and moderate pain. Synonyms: Naprosyn. · · Noun Definition 1 Synonyms · · · naprosyn · · Synonym 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 x latin small letter x U+0078