3
elongated(adjective, long)
3
flat
3
horizontal(adjective, smooth, right, solid, level)
3
lengthways
3
longitudinal
3
narrow(adjective, slight, fine, thin, tight)
3
progressive
3
sequential(adjective, sequential)
3
straightforward(adjective, direct, smooth, right, solid)
3
successive
3
unbroken(adjective, smooth, right, solid, level)
3
uncurved
3
uninterrupted(adjective, smooth, right, solid, level)
3
upright
3
vertical
2
active
2
ancestral(adjective, paternity)
2
arranged(adjective, sequential)
2
beeline(adjective, direct, smooth, right, solid)
2
endwise(adjective, long)
11 years ago|7.9k views|share |citing 
APASmart Define. (2015). linear thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/linear/thesaurus/synonyms
ChicagoSmart Define. 2015. "linear thesaurus" https://smartdefine.org/linear/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, linear thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/linear/thesaurus/synonyms>.
MLASmart Define. "linear thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/linear/thesaurus/synonyms>