1. all the time (forever) 2. always (at all times) 3. around-the-clock (time) 4. around the clock (time) 5. at all times (always) 6. at all times (constantly) 7. constantly (continually) 8. continually (constantly) 9. continuously (constantly) 10. day and night (time) 11. day and night (time) 12. ever (always) 13. forever (all the time) 14. forever (always) 15. persistently (constantly) 16. round-the-clock (time) 17. round the clock (time) 18. twenty-four hours a day (time) 19. twenty-four hours a day (time)