18 entries under course topic. ×
| steep(adjective, sharp, extreme, straight) | |
| precipitous(adjective, smooth, sharp, solid, level) | |
| abrupt(adjective, sharp, quick, upright) | |
| straight-up(adjective, sharp, straight, upright) | |
| high(adjective, sharp, quick, rash) | |
| arduous(adjective, sharp, quick, rash) | |
| declivitous(adjective, sharp, sheer, vertical) | |
| elevated(adjective, sharp, firm, straight) | |
| precipitate(adjective, sharp, quick, rash) | |
| raised(adjective, sharp, firm, straight) | |
| breakneck(adjective, sharp, sheer, vertical) | |
| headlong(adjective, sharp, steep, abrupt) | |
| hilly(adjective, sharp, sheer, vertical) | |
| lifted(adjective, sharp, sheer, vertical) | |
| lofty(adjective, sharp, sheer, vertical) | |
| prerupt(adjective, sharp, sheer, vertical) | |
| sharp(adjective, quick, rash, steep) | |
| straight up(expression, adjective, sharp, firm) |
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| APA | Smart Define. (2015). perpendicular thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/perpendicular/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "perpendicular thesaurus" https://smartdefine.org/perpendicular/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, perpendicular thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/perpendicular/thesaurus/synonyms>. |
| MLA | Smart Define. "perpendicular thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/perpendicular/thesaurus/synonyms> |