From the day of the week, Old English sunnandæg meaning 'day of the sun.'
Sunday is an English word-name drawn from the day of the week, itself deriving from Old English Sunnandæg, “day of the sun.” The seven-day naming system in English preserves a blend of Germanic and Latin planetary traditions, and Sunday retains the most radiant of these associations. As a given name, it belongs to the category of calendar and occasion names, alongside April, June, and Noel, but it is rarer and more striking because it names not a season or festival but a day imbued with both sunlight and sacred rest.
In many cultures, day names are traditional rather than eccentric. Across parts of West Africa, for example, children may be named for the day on which they were born, and Sunday has long been used as a personal name and surname in Anglophone African contexts, especially where Christian influence and English naming practices intersect. In the wider English-speaking world, it remained uncommon for centuries but has grown more visible in modern celebrity culture and among parents drawn to word names with warmth and individuality.
The name carries a rich dual symbolism. On one hand, Sunday evokes leisure, family gatherings, church bells, slow mornings, and a kind of weekly exhale. On the other, its solar origin gives it brightness and renewal.
Literary and musical references often treat Sunday as a day of reflection, melancholy, romance, or transcendence, which adds emotional depth to the name. In usage, Sunday has shifted from something unusual or overtly symbolic to something more stylish and serene. It feels luminous, restful, and quietly unconventional, a name that turns a familiar day into a personal blessing.