Pronunciation: [wɒst bˈɪɡ ˈɒn] (IPA)
Correct spelling for the English word "wast big on" is [wɒst bˈɪɡ ˈɒn], [wɒst bˈɪɡ ˈɒn], [w_ɒ_s_t b_ˈɪ_ɡ ˈɒ_n] (IPA phonetic alphabet).