The word "ex tensities" is spelled with a combination of Latin and English roots. The prefix "ex-" means "out of" and the root "tensities" refers to "intensity". The correct pronunciation of the word is /ɛk stɛnsətiz/. The "ex- " is pronounced as "eks", the "t" is silent and the "s" in "tensities" is pronounced as "z". This phonetic transcription helps us understand the correct way to pronounce the word and avoid any confusion.