Pronunciation: [ˈɒnlʊkˌɜːsɪŋ] (IPA)
Correct spelling for the English word "onlookersing" is [ˈɒnlʊkˌɜːsɪŋ], [ˈɒnlʊkˌɜːsɪŋ], [ˈɒ_n_l_ʊ_k_ˌɜː_s_ɪ_ŋ] (IPA phonetic alphabet).
Correct spelling for onlookersing