#ertha- (i ertha, in erthar). Isolated from the gerund #erthad (itself isolated from aderthad "reunion").
Sindarin
ertha-
verb. to unite
ertha-
verb. to unite
ertha
unite
ertha
unite
(i ertha, in erthar). Isolated from the gerund #erthad (itself isolated from aderthad "reunion").
A verb implied by aderthad “reuniting” (S/113), probably a causative form of √ER “one”, hence = “✱make one”.
Conceptual Development: A similar verb G. ertha- or eretha- appeared in the Gnomish Lexicon of the 1910s, but with a different meaning: “to isolate; [by extension] rob, deprive” (GL/33). This earlier verb was likely based on G. ereth “solitude” (GL/32).