There are 21 words that end with 'len'.
glen | mullen | fallen |
pollen | stolen | sullen |
woolen | stollen | swollen |
woollen | befallen | magdalen |
refallen | psoralen | unfallen |
unswollen | upswollen | chapfallen |
chopfallen | downfallen | crestfallen |
Note: These 21 words that end with 'len' are found from the USA & Canada version of the tournament Scrabble word list.