The spelling of the word "Britwell" can be explained using the International Phonetic Alphabet (IPA). The first syllable "Brit" is pronounced /brɪt/ with a short "i" sound and a "t" at the end. The second syllable "well" is pronounced /wɛl/ with an "e" sound and a "l" at the end. Therefore, the correct spelling of the word "Britwell" uses the letters B-R-I-T-W-E-L-L. It is important to use proper spelling to avoid confusion and misunderstandings in communication.