Seldsen or Seldseen: How To spell?

The word Seldsen is misspelled against Seldseen, an adjective meaning "Seldom seen."

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

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