How Do You Spell HADST A JUMP ON?
Pronunciation: [hˈadst ɐ d͡ʒˈʌmp ˈɒn] (IPA) 
The phrase "hadst a jump on" may seem unusual, with its archaic language and spelling. However, it follows the rules of Early Modern English, which used the second person singular form of "have" ("hadst") and the past participle "jump" to form the past perfect tense. The pronunciation is /hædst ə dʒʌmp ɒn/, with a clear "t" sound in the middle of "hadst" and a short "u" sound in "jump". Despite its old-fashioned appearance, the phrase is still used by some speakers today.
