sincere /sɪnˈsɪr/ /sɪnˈsɪə/
heartfelt /hˈɑːɹtfɛlt/ /hˈɑːtfɛlt/
honest /ˈɑnɪst/ /ˈɒnɪst/
cordial /ˈkɔrʤəl/ /ˈkɔːdiəl/
genuinely /ˈdʒen.ju.ɪn.li/ /ˈdʒenjuɪnli/
sincerely /sɪnˈsɪrli/ /sɪnˈsɪəli/
honestly /ˈɑn.ɪs.tli/ /ˈɒnɪstli/
truly /ˈtruː.li/ /ˈtruːli/