An elf is a mythical creature that is widely depicted in various cultures as a tiny, magical being with pointy ears and a mischievous personality. Some synonyms for the word 'elf' include gnome, troll, fairy, pixie, leprechaun, and sprite. A gnome is a little person who lives underground and can perform magic. A troll is a mythical creature that often hides under bridges and enjoys playing tricks on others. A pixie is a small, mischievous fairy, while a fairy is a magical being often depicted with wings. Leprechauns are tiny, mischievous Irish folklore characters who are known for hiding pots of gold. Sprites, on the other hand, are tiny, magical beings similar to fairies.