Sindarized form of the name of Eärendil, also with variant Aerendil. Tolkien said that Eärendil was “not given Sindarin forms in legend”, but that “forms affected by Sindarin in manuscripts, such as Aerendil, Aerennel, etc. were casual and accidental” (PM/348, 364 note #52).

Conceptual Development: In some notes from the 1930s, the form (N?.) Aearendel appeared beside ᴹQ. Earendel, possibly a Noldorin adaption of the earlier form of his Quenya name (PE22/41).