| habitual(adjective, usual, steady, stable, regular) |
| permanent(adjective, usual, steady, stable, regular) |
| repetitive(adjective, constant, continuous, incessant, repetitious) |
| unbroken(adjective, direct, smooth, right, flat) |
| perennial(adjective, stable, constant, continuous, enduring) |
| continuing(adjective, certain, stable, persistent, constant) |
| lasting(adjective, certain, stable, persistent, constant) |
| non-stop |
| unchanging(adjective, smooth, right, flat, level) |
| monotonous(adjective, dull, steady, stable, regular) |
| running(verb, adjective, constant, incessant) |
| even(adjective, smooth, flat, level, steady) |
| nonstop(adjective, continue, steady, stable, regular) |
| successive(adjective, regular, normal, frequent, recurrent) |
| unrelenting(adjective, certain, determined, persistent, constant) |
| unvarying(adjective, smooth, right, flat, level) |
| chronic(adjective, usual, regular, routine, normal) |
| connected(adjective, steady, stable, regular, fixed) |
| consecutive(adjective, constant, continuous, frequent, recurrent) |
| periodic(adjective, regular, normal, recurrent) |