ˈdɛpjətaɪz ˈdɛpjutaɪz ˌɪntɚˈfɪɹ ˌɪntəˈfɪə ˌɪn.təˈpəʊz ˌɪn.tɚˈpoʊz ˌɪntə(ɹ)ˈviːn ˈsʌbstɪtʃuːt ˈsʌbstɪtut act as a substitute She stood in for the soprano who suffered from a cold get involved, so as to alter or hinder an action, or through force or threat of force Why did the U.S. not intervene earlier in WW II?