* Tylwyth Teg: This is the most common and literal translation for "fairy" in Welsh, but it's often used to refer to elves as well. It encompasses a wide range of magical creatures, including fairies, elves, and sprites.
* Coedwigwr: This literally means "forest dweller" and could be used to refer to an elf if the context suggests a connection to the forest.
* Annwn: This refers to the Welsh Otherworld, a mystical realm where many magical beings reside, including elves. While not a direct translation of "elf", it can be used to describe them in a metaphorical sense.
Ultimately, the best translation for "elf" in Welsh will depend on the specific context and the specific characteristics you want to emphasize.