With a hint of ruggedness and strength about it, but quirky, retro vibes too, Rilda is a rare nickname name. Similar to Tilda or Hilda, it comes from names ending -rild or -rilda, such as Serilda, Everild, Arilda, or Astrild, though it might also be used for the likes of Sarahild, Reinhild, or Romilda. Regardless, it comes from the Old Norse or Germanic elements hildr and hilt, both meaning "battle".

Rilda

Rilda Origin and Meaning

Rilda in Nameberry Forums