Nendili noun "Water-lovers", the most frequently used "title" or secondary name of the Lindar (Teleri) (WJ:411) Sg. #Nendil.
Quenya
nendil
noun. beast that lives in the water
Elements
Word Gloss nén “water, water, [ᴱQ.] river” -(n)dil “-friend, -lover; devotion, disinterested love”
Nendili
water-lovers
A general term for aquatic animals, including fish (lingwi) as well as other species such as whales and dolphins (NM/336). It appears to be a combination of nén “water” and -(n)dil “-lover”.