There are 11 words that end with 'soever'.
soever | howsoever |
whosoever | whatsoever |
whensoever | whomsoever |
wheresoever | whichsoever |
whosesoever | whencesoever |
whithersoever | |
Note: These 11 words that end with 'soever' are found from the USA & Canada version of the tournament Scrabble word list.