A good speller is someone who is proficient in the use of words, particularly when it comes to spelling. The two crossword solutions for this term are 'hexer' and 'WITCH, ' both of which refer to people who practice magic and use spells. Hexers and witches are often associated with the supernatural and have been featured in many works of fiction. They are also sometimes seen as having a special connection to the natural world and its energies.