A creative spelling of Andi, a diminutive of Andrea or Andrew, from Greek meaning brave or manly.
Anndi is a creative spelling of Andi, itself a diminutive of Andrea or Andrew. Those names trace back through Greek tradition to the root associated with bravery and strength, so beneath the playful look there is a sturdy classical ancestry.
The doubled consonants and final -i give the name a more styled, contemporary appearance than the older nickname form. Its effect is casual but intentional, the kind of spelling that makes a familiar sound feel personalized. Anndi fits well with modern naming tastes that favor short forms with a little visual twist, especially when they are meant to feel friendly and unpretentious. The name reads as bright, youthful, and slightly androgynous, while still keeping a soft enough edge to feel approachable.