| endless(adjective, determined, regular, persistent, constant) |
| even-tempered(adjective, calm, sound, smooth, reasonable) |
| frequent(adjective, regular, frequency) |
| good(strong, consistent, trustworthy, steadfast, dependable) |
| interminable(adjective, determined, regular, persistent, constant) |
| monotonous(adjective, calm, quiet, soft, reasonable) |
| nonstop(adjective, direct, stable, regular, fixed) |
| obstinate(adjective, moderate, determined, resolution, resolute) |
| ordered(adjective, ordinary, usual, normal, even) |
| repeated(adjective, continuous, frequency) |
| self-possessed(adjective, calm, cool, sound, reasonable) |
| smooth(adjective, calm, quiet, right, friendly) |
| stabilise(verb, activity) |
| still(verb, adjective, calm, quiet, cool) |
| stubborn(adjective, secure, firm, intense, deliberate) |
| temperate(adjective, calm, quiet, smooth, soft) |
| tenacious(adjective, strong, sound, secure, tough) |
| unhurried(adjective, unexcitable) |
| unruffled(adjective, calm, quiet, cool, smooth) |
| assiduous |