The phrase "dost one bit" is spelled with the Old English verb "dost" meaning "do you". It is pronounced as /dəʊst/ with a long "o" sound and the "st" blend at the end. The word "bit" is pronounced as /bɪt/ with a short "i" sound and a hard "t" at the end. The phrase is typically used in the context of questioning someone's interest or concern about something. The spelling of this phrase is unique to Old English and may not be commonly used in modern English.