Toennesson is spelled as /tʊˈnɛsən/. It is a surname originating from Scandinavia, particularly from Norway. A unique characteristic of Scandinavian languages is the use of double consonants, such as the "nn" in Toennesson. This double "n" is pronounced with a short, strong "n" sound, and is used to differentiate from a single "n" which is pronounced with a longer, softer sound. Although the spelling of Toennesson may seem complex, it is a prime example of how phonetic transcription can help to understand the spelling of words.