to stimulate /ˈstɪmjəˌleɪt/ /ˈstɪmjʊleɪt/
to arouse /əˈraʊz/ /əˈraʊz/
to excite /ɪkˈsaɪt/ /ɪkˈsaɪt/
to provoke /prəˈvoʊk/ /prəˈvəʊk/