Big victory or ocean shell
In Japanese, the name is often formed from kanji such as 'dai' meaning big or great, and 'kai' which can mean ocean, shell, or victory. It is a modern-sounding name that is relatively rare both in Japan and the United States. The name's energy is derived from its strong, percussive syllables and positive natural or triumphant connotations.
Less common today
Dekai isn't in the latest US Top 1000. It last peaked at #7,095 in 2025.
US births per 5-year period, 1990–present (SSA data).
