There are 16 words that end with 'llen'.
mullen | fallen | pollen |
sullen | stollen | swollen |
woollen | befallen | refallen |
unfallen | unswollen | upswollen |
chapfallen | chopfallen | downfallen |
crestfallen | ||
Note: These 16 words that end with 'llen' are found from the USA & Canada version of the tournament Scrabble word list.