66 entries under horizontal topic. ×

5
consecutive(adjective, complete, smooth, solid, level)
5
stable(adjective, calm, quiet, direct, smooth)
5
true(adjective, direct, smooth, right, flat)
4
linear(adjective, smooth, right, solid, level)
4
unruffled(verb, adjective, quiet, sound, soft)
3
flush(adjective, calm, quiet, direct, smooth)
3
plain(adjective, calm, quiet, smooth, soft)
3
right(adjective, direct, smooth, flat, solid)
2
in line(expression, adjective, calm, smooth, flat)
2
planate(adjective, calm, quiet, direct, smooth)
2
plumb(adjective, direct, smooth, right, flat)
2
straightforward(adjective, direct, smooth, solid, level)
2
through(adjective, direct, smooth, right, solid)
2
unswerving(adjective, complete, smooth, right, total)
1
beeline(adjective, smooth, right, solid, level)
1
bland(adjective, quiet, soft, gentle, flat)
1
creamy(adjective, quiet, soft, gentle, flat)
1
easy(adjective, quiet, smooth, soft, gentle)
1
effortless(adjective, quiet, soft, gentle, flat)
1
fluent(adjective, quiet, smooth, soft, gentle)
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APASmart Define. (2015). unbroken thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unbroken/thesaurus/synonyms
ChicagoSmart Define. 2015. "unbroken thesaurus" https://smartdefine.org/unbroken/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unbroken thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unbroken/thesaurus/synonyms>.
MLASmart Define. "unbroken thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/unbroken/thesaurus/synonyms>