| parallel(calm, close, direct, smooth, right) |
| perspicuous(adjective, clear, sound, reasonable, sensible) |
| reproducible |
| sequential(adjective, continuous, indirect, resultant, resulting) |
| unchangeable(adjective, set, strong, certain, regular) |
| unvaried(adjective, direct, smooth, right, flat) |
| akin(adjective, calm, close, smooth, like) |
| clear(adjective, sound, reasonable, sensible, rational) |
| coincident(adjective, equal, parallel, uniform, equivalent) |
| consecutive(adjective, continuous) |
| direct(adjective, intelligible) |
| flat(adjective, calm, strong, direct, smooth) |
| habitual(adjective, reasonable, common, ordinary, usual) |
| monotonous(adjective, dull, steady, stable, regular) |
| natural(adjective, reasonable, sensible, ordinary, usual) |
| normal(adjective, reasonable, sensible, common, ordinary) |
| of a piece(expression, adjective, idiom, agreement, steady) |
| organic |
| plain(adjective, calm, smooth, flat, level) |
| proportionate(adjective, calm, smooth, flat, agreement) |