Impened or Impenned: How To spell?

The word Impened is misspelled against Impenned, which is past tense of "Impen"

Impenned has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings impe & ed which should not be misspelled with single 'N'
Wrong Spelling: impe-n-ed
Correct Spelling: impe-nn-ed
Explore spell check of Impenned to spell without errors.