Thoibi is from the Manipuri (Meitei) ꯊꯣꯏꯕꯤ (Thoibi — beautiful princess). Thoibi is one of the Manipuri feminine names — central to traditional Meitei Indigenous heritage. Princess Thoibi of Moirang is the legendary heroine of the Khamba-Thoibi epic ( Manipuri Meitei love-epic, c. 17th c.
Thoibi 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 Thoibi reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.