Sen or Seen: How To spell?
The word Sen is misspelled against Seen, an adjective meaning "Versed; skilled; accomplished."
Seen has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings S & n which should not be misspelled with single 'E'
Wrong Spelling:  S-e-n  Correct Spelling:  S-ee-n 
Explore spell check of Seen to spell without errors.