How To Spell slowing down?

Correct pronunciation for the word "slowing down" is [slˈə͡ʊɪŋ dˈa͡ʊn], [slˈə‍ʊɪŋ dˈa‍ʊn], [s_l_ˈəʊ_ɪ_ŋ d_ˈaʊ_n].

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