Yes, deil is in the scrabble dictionary.
What does the word deil mean?
/ (diːl) / noun. a Scot word for devil.
What do you mean by Devil?
1 often capitalized : the most powerful spirit of evil. 2 : an evil spirit : demon, fiend. 3 : a wicked or cruel person. 4 : an attractive, mischievous, or unfortunate person a handsome devil poor devils.