13 entries under steep topic. ×
| vertical(noun, adjective, smooth, sharp, solid) | |
| erect(verb, adjective, smooth, sharp, solid) | |
| upright(noun, adjective, adverb, smooth, solid) | |
| sheer(adjective, smooth, sharp, solid, level) | |
| precipitous(adjective, smooth, sharp, solid, level) | |
| up-and-down(adjective, upright, variable, vertical) | |
| abrupt(adjective, sharp, course, quick, upright) | |
| arduous(adjective, sharp, course, quick, rash) | |
| cocked(adjective, firm, straight, upright) | |
| precipitate(adjective, sharp, course, quick, rash) | |
| headlong(adjective, sharp, course, abrupt) | |
| sharp(adjective, course, quick, rash) | |
| upward(adjective, straight, upright, erect) |
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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> |