Pronunciation: [ɡˈadɛzdən] (IPA) 
The word "Gaddesden" is spelled with the phonetic transcription /ˈɡædzdən/. The first syllable is pronounced with a short "a" sound, like in "cat". The second syllable has a long "e" sound, as in "bee". The third and fourth syllables have a short "uh" sound, similar to the "a" in "up". The final syllable is pronounced with a short "e" sound, like in "pet". This word is a place name for a village in England.
The word Gaddesden refers to a place name, specifically Gaddesden or Great Gaddesden, which is a village in Hertfordshire, England. The etymology of the word Gaddesden can be traced back to Old English.
The first part of the word, Gaddes, is believed to come from the Old English personal name Gæddi or Gadda. Personal names were often used to describe places in Old English. As for the second part, den, it is derived from the Old English word denu meaning valley.
So, the combination of Gadda or Gæddi with denu results in Gaddesden, which essentially means the valley belonging to Gadda or Gæddi's valley.
