| Main Entry: | |
| Part of Speech: | adverb |
| Definition: | above |
| Synonyms: | aloft, beyond, covering, farther up, higher than, in heaven, in the sky, off, on high, on top of, overhead, overtop, straight up, traversely, upstairs |
| Notes: | more than refers to countable items (there are more than 50 pies); over refers to general or unspecified amounts (over half the church is full) |
| Antonyms: | under |
| 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: | steep |
| Part of Speech: | adjective |
| Definition: | extreme in direction, course |
| Synonyms: | abrupt, arduous, breakneck, declivitous, elevated, erect, headlong, high, hilly, lifted, lofty, perpendicular, precipitate, precipitous, prerupt, raised, sharp, sheer, straight-up |
| Notes: | a gentle slope is a glacis; a precipitous slope is a steep |
| Antonyms: | gentle, mild, moderate |
| Main Entry: | vertical |
| Part of Speech: | adjective |
| Definition: | upright |
| Synonyms: | bolt upright, cocked, erect, on end, perpendicular, plumb, sheer, steep, straight-up, up-and-down, upward |
| Antonyms: | horizontal, prone |