Vezava is from the Erzya Mordvin Ведява (Vedyava — ved water + ava mother — water mother). Vezava is one of the Erzya feminine names — central to traditional Erzya Indigenous Volga Finnic Mordvin heritage. Erzya feminine name.
Vezava does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Vezava reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.