| incurable(adjective, fixed, persistent, continuous, hardened) |
| invariable(adjective, dull, ordinary, usual, steady) |
| iterative(adjective, usual, established, repetition) |
| perceptive(adjective, spontaneous, instinctive, intuitive) |
| periodic(adjective, regular, normal, recurrent) |
| permanent(adjective, usual, steady, stable, regular) |
| predominating(adjective, regular) |
| stereotyped(adjective, simple, plain, cold, common) |
| unbroken(adjective, dull, steady, stable, regular) |
| unceasing(adjective, persistent, continuous, endless, relentless) |
| unchanging(adjective, dull, cold, steady, stable) |
| unexceptional(adjective, characteristic, common, ordinary, familiar) |
| unreflecting(adjective, spontaneous, instinctive, intuitive) |
| unremitting(adjective, steady, regular, persistent, even) |
| untaught(adjective, spontaneous, instinctive, intuitive) |
| well-worn |
| connected(adjective, dull, steady, stable, regular) |
| continuing(adjective, regular, fixed, persistent, continuous) |
| cyclical(adjective, regular, continuous) |
| endless(adjective, persistent, continuous, relentless, continual) |