Pronunciation: [bˈɪɡbɪɡ] (IPA)
Correct spelling for the English word "bigbig" is [bˈɪɡbɪɡ], [bˈɪɡbɪɡ], [b_ˈɪ_ɡ_b_ɪ_ɡ] (IPA phonetic alphabet).