The spelling of "un cannier" can be a bit confusing due to a few factors. First, it is not a common word in everyday language. Secondly, the use of two "n" letters next to each other can create uncertainty. The correct spelling is /ʌn ˈkæniər/, with the stress on the second syllable. The double "n" is necessary to indicate the pronunciation of the second syllable as "n-yuh" rather than just "nyah." With practice, spelling "un cannier" correctly will become easier.