The correct spelling of the word "Barnhardt" is /ˈbɑːrn.hɑːrt/. The word is pronounced with two syllables, beginning with the stressed syllable "barn" and ending with the unstressed syllable "hardt". The letter "h" in the second syllable is silent, which can cause confusion in spelling. Barnhardt is a German surname that means "hard as a barn" or "strong as a barn". It is a rare name, but can be found in the United States and other English-speaking countries.