I don't think so UK /ˌaɪ ˌdəʊnt ˈθɪŋk(ˌ)səʊ/US /ˌaɪ ˌdoʊnt ˈθɪŋk(ˌ)soʊ/ phrase2 •I think what has been said is untrue.Bob: Is this the right place to catch the bus? Suzy: I don't think so. •No, absolutely not (used to refuse or decline something proposed).Go out with you? Huh, I don't think so, sweetheart!