revolution /ˌrev.əˈluː.ʃən/ /ˌrɛvəˈluːʃən/
uprising /ˈʌpraɪzɪŋ/ /ˈʌpraɪzɪŋ/
revolt /rɪˈvoʊlt/ /rɪˈvəʊlt/
solstice /ˈsɑːlstɪs/ /ˈsɒlstɪs/
sudden, drastic, or radical change