Infiniti is a modern word-name from infinity, ultimately rooted in Latin infinitas meaning boundlessness.
Infiniti is a creative respelling of Infinity, a word-name that entered the English lexicon from the Latin infinitas — in (not) + finis (end, limit) — meaning literally "without end." The concept of infinity has captivated mathematicians, theologians, and philosophers for millennia: Aristotle distinguished potential from actual infinity; Cantor's nineteenth-century work on transfinite numbers showed that some infinities are larger than others; mystics across traditions have used the infinite as a name for the divine. The word carries the grandest possible frame of reference.
The spelling Infiniti became culturally embedded when Nissan launched its luxury automotive division under that name in 1989, choosing the variant spelling partly for trademark reasons and partly for its sleek, foreign-language affect — it echoes Italian and Spanish, languages associated with style and elegance. For a generation of children born in the 1990s and 2000s, Infiniti arrived as a name through the simultaneous currents of the luxury brand and the broader trend of aspirational word-names: Freedom, Journey, Legacy, Serenity. It appears on birth certificates most frequently in African American communities, where creative and resonant name-making has long been a cultural art form.
As a given name, Infiniti makes an extraordinary promise: the child is boundless, unlimited, beyond the horizon of ordinary possibility. It is a maximalist choice in an era that often celebrates the maximal. Critics note that names evoking abstract vastness can be hard to inhabit on an ordinary Tuesday, but proponents argue that a name should aspire upward. Infiniti does nothing halfway — it means everything, always, without end.