| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | level, unwrinkled; flowing |
| Synonyms: | bland, continuous, creamy, easy, effortless, equable, even, flat, fluent, fluid, flush, frictionless, gentle, glassy, glossy, hairless, horizontal, invariable, lustrous, mild, mirrorlike, monotonous, peaceful, plain, planate, plane, polished, quiet, regular, rhythmic, rippleless, serene, shaven, shiny, silky, sleek, soft, soothing, stable, steady, still, tranquil, unbroken, undeviating, undisturbed, uneventful, uniform, uninterrupted, unruffled, untroubled, unvarying, velvety |
| Antonyms: | broken, coarse, intermittent, irregular, rough, uneven, wrinkled |
| Main Entry: | straight |
| Part of Speech: | adjective |
| Definition: | aligned; not curved |
| Synonyms: | beeline, collinear, consecutive, continuous, direct, erect, even, horizontal, in a line, in a row, in line, inflexible, invariable, level, like an arrow, lineal, linear, near, nonstop, perpendicular, plumb, precipitous, rectilineal, rectilinear, right, running, sheer, short, smooth, solid, square, straightforward, successive, through, true, unbent, unbroken, uncurled, undeviating, undistorted, uninterrupted, unrelieved, unswerving, upright, vertical |
| Antonyms: | curved, indirect, twisted |
| Main Entry: | unchangeable |
| Part of Speech: | adjective |
| Definition: | constant, steadfast |
| Synonyms: | changeless, continuing, firm, fixed, immovable, immutable, inalterable, inevitable, inflexible, invariable, irreversible, permanent, resolute, stable, strong, unalterable, unmodifiable, unmovable |
| Antonyms: | changeable, changing, inconstant, intermittent, temporary |
| Main Entry: | unchanging |
| Part of Speech: | adjective |
| Definition: | constant, permanent |
| Synonyms: | abiding, changeless, consistent, continuing, enduring, equable, eternal, even, fixed, immutable, imperishable, invariable, lasting, perpetual, rigid, same, stabile, static, unchanged, unfading, unfailing, unfluctuating, uniform, unvarying |
| Antonyms: | changeable, changing, inconstant, intermittent, temporary |
| Main Entry: | unerring |
| Part of Speech: | adjective |
| Definition: | accurate |
| Synonyms: | certain, errorless, exact, faultless, impeccable, inerrable, inerrant, infallible, invariable, just, perfect, reliable, sure, true, trustworthy, unfailing |
| Antonyms: | erring, imperfect, inaccurate, mistaken |
| Main Entry: | unfailing |
| Part of Speech: | adjective |
| Definition: | certain, unchanging |
| Synonyms: | absolute, assiduous, bottomless, boundless, ceaseless, come-through, consistent, constant, continual, continuing, continuous, counted on, delivering, dependable, diligent, dyed-in-the-wool, endless, eternal, faithful, inexhaustible, infallible, invariable, loyal, never-failing, persistent, reliable, rock solid, same, solid, staunch, steadfast, straight, sure, surefire, there, tried-and-true, true, trustworthy, unflagging, unlimited, unrelenting |
| Antonyms: | failing, impermanent, uncertain, unsure |
| Main Entry: | uniform |
| Part of Speech: | adjective |
| Definition: | consistent |
| Synonyms: | compatible, consonant, constant, equable, even, fated, fateful, fixed, habitual, homogeneous, immutable, incorrigible, inflexible, invariable, irreversible, level, methodical, monolithic, normal, of a piece, ordered, orderly, ossified, plumb, regular, reliable, rigid, smooth, stable, static, steady, straight, symmetrical, systematic, true, unalterable, unbroken, unchanging, undeviating, undiversified, unfluctuating, unmodifiable, unvarying, well-balanced, well-proportioned |
| Antonyms: | changing, different, divergent, inconsistent, varied |
| Main Entry: | unvarying |
| Part of Speech: | adjective |
| Definition: | steady |
| Synonyms: | constant, even, fixed, invariable, monotonous, plain, unchanging, unfluctuating, uniform, uninterrupted |
| Antonyms: | varying |
| Main Entry: | inalterable |
| Part of Speech: | adjective |
| Definition: | inflexible |
| Synonyms: | adamant, adamantine, determined, dogged, dyed-in-the-wool, firm, fixed, hard, hard-and-fast, immovable, immutable, implacable, indomitable, inexorable, intractable, invariable, iron, ironclad, obdurate, obstinate, relentless, resolute, rigid, rigorous, set, set in one's ways, single-minded, stand one's ground, staunch, steadfast, steely, stiff, strict, stringent, unadaptable, unalterable, unbending, unchangeable, uncompliant, uncompromising, unrelenting, unswayable, unyielding |