Sindarin 

arnen

adjective. (?) royal

Originally, Lonnath-Ernin might have been intended to mean 'royal havens', assuming the second element to be a regular adjective. However, the second element in Emyn Arnen 'hills of Arnen' is singular, and Tolkien later decided that it should mean 'Hill beside the water', see VT/42:17 and HL/119-124. Nevertheless, this meaning cannot apply to Lonnath-Ernin (havens are near water by definition), so unless we entirely reject this earlier form, we may assume that an adjective 'royal' is still possible.

Sindarin [Emyn Arnen, Lonnath-Ernin LotR/V:I, WR/294, WR/3] Group: SINDICT. Published by

arnen

place name. Beside the Water

A name attested as an element in Emyn Arnen (LotR/750). In an essay on the The Rivers and Beacon-hills of Gondor (VT42/5-31), Tolkien indicated the name was incorrectly assembled by the local people from a mixture of Quenya and Sindarin elements: Q. ar- “beside” and S. nen “water”, thus meaning “Beside the Water” (VT42/17).

Element in

Elements

WordGloss
ar-“by-, beside, near, by-, beside, near; [ᴹQ.] outside”
nen“water; lake, pool; (lesser) river, water; lake, pool; (lesser) river, [ᴱN.] stream”
Sindarin [VT42/17; VT42/18] Group: Eldamo. Published by

arn

adjective. royal

Sindarin [arn(a)gon-ath Letters/427] Group: SINDICT. Published by

arn

royal

arn (noble), pl. ern

arn

royal

(noble), pl. ern

ar

royal

(adj. prefix) ar- (noble, high). In the form ar(a)- this is an element in the names of the kings of Arnor and Arthedain.

ar

royal

(noble, high). In the form ar(a)- this is an element in the names of the kings of Arnor and Arthedain.