expert /ˈek.spɜrt/ /ˈekspɜːt/
connoisseur /ˌkɑːnəˈsɜːr/ /ˌkɒnəˈsɜː/
skillful /ˈskɪl.fəl/ /ˈskɪlfl/
skilled /skɪld/ /skɪld/