Synonyms of perpendicular
- 1 Syllable
- sheer, straight, plumb, steep
- 2 Syllables
- steeper, standing, erect, unbent, sheerer, steeping, upright, straightest, stand-up, straight-up, longways, steepest, straighter, plumber
- 3 Syllables
- crosswise, uncurled, collinear, mullioned, sideling, vertical, up-and-down
- 4 Syllables
- vertically, transversely, horizontal, rectilineal, declivitous, precipitous, erectile
- 5 Syllables
- horizontally, contrariwise