From Galician/Portuguese 'luar,' meaning moonlight.
Luar is the Portuguese word for 'moonlight,' and its use as a given name represents one of the most poetically direct naming choices a parent can make — to name a child after the moon's reflection on water, the soft illumination of a clear night, the quality of light that has inspired poets and lovers across every human culture. In Portuguese and Brazilian literary tradition, moonlight (luar) carries deep romantic and melancholic connotations, appearing throughout the poetry of Fernando Pessoa, in the lyrics of bossa nova and saudade-inflected music, and in the broader Lusophone aesthetic tradition that prizes longing, beauty, and nocturnal emotion. As a given name, Luar has been used in Brazil and Portugal with increasing frequency in recent decades, reflecting a broader global trend of using nature-words and poetic vocabulary as given names.
It joins a family of luminous, nature-derived names — Luna, Selene, Aurora, Soleil — while being more specific and less commonly heard than most of them. The word itself derives from the Latin luna (moon) via the Portuguese lua, with the suffix -ar forming the adjectival/noun construction meaning 'of the moon' or 'moonlight.' The connection to luna means Luar shares deep etymological roots with the names Luna, Lunette, and the Roman goddess of the moon.
In broader international usage, Luar has begun appearing in communities well beyond the Portuguese-speaking world, carried by parents who discovered the word and were captivated by its sound and meaning. It is two syllables, gently stressed, entirely pronounceable across multiple languages, and its meaning requires almost no translation — moonlight speaks for itself. To name a child Luar is to give them, from birth, a kind of luminous inheritance.