Ancient or archaic
Arcaius is a modern elaboration of the Greek word 'archaios', meaning ancient or from the beginning. It shares roots with words like 'archaic' and 'archetype', suggesting a sense of timelessness and historical depth. While rare, it follows the trend of using Latinized-sounding endings for names with classical roots.
Less common today
Arcaius isn't in the latest US Top 1000. It last peaked at #4,699 in 2024.
US births per 5-year period, 1990βpresent (SSA data).