| Main Entry: | horizontal |
| Part of Speech: | adjective |
| Definition: | lying flat |
Synonyms: |
accumbent, aligned, even, flush, level, parallel, plane, recumbent, regular, smooth, straight, uniform |
Antonyms: |
upright, vertical |
| Main Entry: | direct |
| Part of Speech: | adjective |
| Definition: | undeviating; uninterrupted |
Synonyms: |
beeline, continuous, even, horizontal, in bee line, in straight line, linear, nonstop, not crooked, point-blank, right, shortest, straight, straight ahead, straightaway, through, true, unbroken, unswerving |
Antonyms: |
changing, deviating, indirect, intermittent, interrupted, varying |
| Main Entry: | even |
| Part of Speech: | adjective |
| Definition: | flat, uniform |
Synonyms: |
alike, balanced, consistent, constant, continual, continuous, direct, equal, flush, homogenous, horizontal, level, matching, metrical, parallel, planate, plane, plumb, proportional, regular, right, same, smooth, square, stabile, stable, steady, straight, surfaced, true, unbroken, unchanging, undeviating, unfluctuating, uninterrupted, unvaried, unvarying, unwavering, unwrinkled |
Antonyms: |
broken, different, disparate, irregular, rough, uneven |
| Main Entry: | flat |
| Part of Speech: | adjective |
| Definition: | level, smooth |
Synonyms: |
collapsed, complanate, decumbent, deflated, depressed, empty, even, extended, fallen, flush, horizontal, laid low, low, oblate, outstretched, pancake, planar, planate, plane, procumbent, prone, prostrate, punctured, reclining, recumbent, splay, spread out, supine, tabular, unbroken |
Antonyms: |
broken, elevated, raised, rough, rounded, rugged, uneven |
| Main Entry: | flush |
| Part of Speech: | adjective |
| Definition: | flat |
Synonyms: |
even, horizontal, level, planate, plane, smooth, square, true |
Antonyms: |
rough, uneven |
| Main Entry: | level |
| Part of Speech: | adjective |
| Definition: | smooth, balanced |
Synonyms: |
akin, aligned, alike, calm, commensurate, common, comparable, consistent, constant, continuous, equable, equivalent, even, exact, flat, flush, horizontal, identical, in line, leveled, like, lined up, matched, matching, of same height, on a line, on a par, on one plane, parallel, plain, planate, plane, planed, polished, precise, proportionate, regular, rolled, same, stable, steady, straight, trim, trimmed, unbroken, unfluctuating, uniform, uninterrupted |
Antonyms: |
ragged, uneven |
| Main Entry: | perpendicular |
| Part of Speech: | adjective |
| Definition: | at right angles to |
Synonyms: |
erect, horizontal, on end, plumb, sheer, stand-up, standing, steep, straight, straight-up, upright, vertical |
Antonyms: |
horizontal, level |
| Main Entry: | plane |
| Part of Speech: | noun |
| Definition: | flat surface; level |
Synonyms: |
condition, degree, extension, face, facet, footing, grade, horizontal, obverse, position, sphere, stratum |
| Notes: | plane is essentially the same word as plain, both ultimately coming from Latin planus 'flat' or 'clear' |
| Main Entry: | prone |
| Part of Speech: | adjective |
| Definition: | lying down |
Synonyms: |
decumbent, face down, flat, horizontal, level, procumbent, prostrate, reclining, recumbent, resupine, supine |
Antonyms: |
sitting, straight, upright |
| Main Entry: | recumbent |
| Part of Speech: | adjective |
| Definition: | lying down |
Synonyms: |
decumbent, flat, horizontal, level, procumbent, prostrate, reclining, resupine, sprawling, supine |