hypo- combining form
▶ with stress-neutral suffix ¦haɪp ə ʊ AmE -ə —but before a vowel ¦haɪp əʊ AmE -oʊ — hypochlorous ˌhaɪp ə ʊ ˈklɔːr əs ◂ AmE -ə- -ˈkloʊr- — hypoallergenic ˌhaɪp əʊ ˌæl ə ˈdʒen ɪk -ɜːˈ•- AmE -oʊ ˌæl ə r- —The fact that Received Pronunciation ¦haɪp ə is ambiguous as between hypo- and hyper- means that for clarity it is arguably better to avoid reducing the second syllable and therefore always to say ¦haɪp əʊ BrE AmE
▶ with stress-imposing suffix haɪ ˈpɒ+ AmE -ˈpɑː+ — hypogynous haɪ ˈpɒdʒ ɪn əs - ə n- AmE -ˈpɑːdʒ- BrE AmE