Undecenial or Undecennial: How To spell?
The word Undecenial is misspelled against Undecennial, an adjective meaning "Occurring or observed every eleventh year; belonging to, or continuing, a period of eleven years; undecennary; as, an undecennial festival."
Undecennial has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings undece & ial which should not be misspelled with single 'N'
Wrong Spelling: undece-n-ial Correct Spelling: undece-nn-ial
Find more wrongly spelled words of Undecennial to spell it well.