Pronunciation: [wɒst ˌʌp ˈʌp] (IPA)
Correct spelling for the English word "wast up up" is [wɒst ˌʌp ˈʌp], [wɒst ˌʌp ˈʌp], [w_ɒ_s_t ˌʌ_p ˈʌ_p] (IPA phonetic alphabet).