Japaned or Japanned: How To spell?
The word Japaned is misspelled against Japanned, an adjective meaning "Treated, or coated, with varnish in the Japanese manner."
Japanned has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings japa & ed which should not be misspelled with single 'N'
Wrong Spelling:  japa-n-ed  Correct Spelling:  japa-nn-ed 
Explore spell check of Japanned to spell without errors.