kənˈd͡ʒɛk.t͡ʃə(ɹ) kənˈd͡ʒɛk.t͡ʃɚ hʌɪˈpɒθɪkeɪt səˈpəʊz səˈpoʊz form or construct theories he thinks and theorizes all day construct a theory about Galileo theorized the motion of the stars to believe especially on uncertain or tentative grounds Scientists supposed that large dinosaurs lived in swamps