Nivaan sits next to 4 phonetic neighbors — Nirvaan, Nivan, and Kiran are the closest matches by sound. Most share Nivaan's Indian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"one who has attained liberation"
"complete, whole, all-encompassing"
"auspicious, fortunate, blessed"
"trust, reliance"
"living water, strength"
"vital energy, good health"
"triumph through divine grace"
"born of a water pot"
"ocean, sea, flowing water"
"ether, the fifth element"
"great, powerful"
"one who has a portion of glory/excellence"
"one not held by others, self-reliant"
"of Shiva, belonging to Shiva"
"one who glorifies through remembrance"
Similar sound: These names share phonetic patterns with Nivaan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Sanskrit origins, giving them the same cultural heritage as Nivaan.
Rhythm: Nivaan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.