Pronunciation: [wˈɜːt ɒnðɪ ˌʌp ˈʌp] (IPA)
Correct spelling for the English word "wert on the up up" is [wˈɜːt ɒnðɪ ˌʌp ˈʌp], [wˈɜːt ɒnðɪ ˌʌp ˈʌp], [w_ˈɜː_t ɒ_n_ð_ɪ_ ˌʌ_p ˈʌ_p] (IPA phonetic alphabet).