The spelling of the word "Otha" is based on the pronunciation in the English language. Using IPA phonetic transcription, it can be spelled as /ˈoʊθə/ which starts with a long "o" sound followed by a "th" sound and ends with a neutral vowel sound. The spelling of the word is not fixed, however, and can vary depending on the context and individual accents. Some alternate spellings include "Otho" or "Otto."