Modern creation, possibly related to Sinai or Cyane
Cynai is a contemporary American name with ambiguous roots. It may be a creative variation of the biblical Mount Sinai, or a modern spin on the Greek name Cyane, which refers to a deep blue color. Its rarity makes it a distinctive choice for parents seeking a unique sound.
Less common today
Cynai isn't in the latest US Top 1000. It last peaked at #9,247 in 2025.
US births per 5-year period, 1990–present (SSA data).
