Adella is a variant of Adela, a Germanic name from the word adal, meaning "noble", that was borne by a daughter of William the Conqueror and later by Adele, the singer. The doubled l gives the name the look of Stella and Bella while keeping its old-fashioned core. In the United States Adella ranked number 6489 in 2000, peaked at number 2029 in 2012 and has stayed in the mid 2000s since, standing at number 2608 in 2025 with 66 girls.