Unsen or Unseen: How To spell?

The word Unsen is misspelled against Unseen, an adjective meaning "Not seen or discovered."

Unseen has double "ee" is mispronounced as "e"
Remember double 'EE' in between the strings Uns & n which should not be misspelled with single 'E'
Wrong Spelling:  Uns-e-n 
Correct Spelling:  Uns-ee-n 
Explore spell check of Unseen to spell without errors.

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