Jalyssa, a distinctly American feminine given name, originated in the late 20th century as an orthographic elaboration that synthesizes the established name Alyssa—itself derived from a Greek term connoting “rationality”—with an initial J, thereby reflecting an Anglo-American propensity for nominal innovation and individual expression. Although its etymological provenance remains undocumented in classical sources, U.S. Social Security Administration data chronicle Jalyssa’s progression from its inaugural five registrations in 1987 to a peak of 105 in 2007, followed by a gradual attenuation to eight registrations in 2024, situating it predominantly within the 800th to 950th rank bracket. Pronounced juh-LISS-uh (/dʒəˈlɪsə/), the name’s measured phonetic composition and restrained prevalence render it an attractive appellation for parents seeking a balance between subtle familiarity and distinct individuality.