Just of curiosity, does anyone know if Tolkien ever stated Aredhel as being a non-gender specific name? As in the Adventurer's book it's listed as a male elf name, whereas the only Aredhel I know of was female.
Cheers

Beleg

No idea, but I'm guessing it's a female name:
http://www.glyphweb.com/arda/a/aredhel.html

No reason it couldn't be a male name as well, I suppose. We've got Lesley, Ashley and Leigh/Lee as examples of names that are used by both genders. Then there's the boy named Sue.

In Quenya, the are some suffix specific for female names which are (according to my limited knowledge, there are more):
-wen, -ndis, -dis (maybe -isse), -ien, -iel, -rien, -riel, -rel -sel.

While those for males names are:
-ion, -ndur, -ndil.

So Aredhel sounds like a name only for females, and I would be surprised Tolkien ever used a female name for a male character.

But please note I'm no Quenya expert (not by a long shot).

According to Tolkien Gateway, Aredhel means "Noble Elf".

Looking them up in Hiswelókë it would break down etymologically into [âr, ara- or aran] + edhel, I think. So "King/Noble/Royal" + "elf (female)" . I noted that the suffix has mutliple spellings, providing edhel or edhil, so I can only guess that the el ending is a female suffix although it is not specifically noted.

So I don't think Aredhel is acceptable, but Aredhil would probably be the male equivalent of the name.

PS: BTW, there are different dictionary layouts for that site, go to the main page and try some of the others.