Nailani is a modern American name built on the Hawaiian element lani, meaning "heavens" or "sky", with a first syllable that echoes Naomi and Nyla; it is a close cousin of Nalani and Leilani rather than a traditional Hawaiian name. Its soft vowels fit the current taste for flowing four-syllable girls' names. Nailani was almost unused in 2000 and has climbed year after year to number 1577 in 2025, its best rank so far.