thinker /ˈθɪŋkər/ /ˈθɪŋkə/
intellect /ˈɪntəˌlɛkt/ /ˈɪntɪlɛkt/
thoughtful /ˈθɔːt.fəl/ /ˈθɔːtfl/
pensive /ˈpensɪv/ /ˈpensɪv/