Synonyms|303Antonyms|92|Broader|5Narrower|0Related|372

29 entries under substantial topic. ×

1
significant(adjective, great, extraordinary, unusual, important)
0
considerable
0
estimable(significant, definite, considerable)
0
good-sized(significant, definite, considerable)
0
goodly(significant, definite, considerable)
0
healthy(significant, definite, considerable)
0
large(significant, definite, considerable)
0
measurable(significant, definite, considerable)
0
sizable(significant, definite, considerable)
<12>
For more, visit Observable on Power Thesaurus
11 years ago|6.9k views|share |citing 
APASmart Define. (2015). observable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/observable/thesaurus/synonyms
ChicagoSmart Define. 2015. "observable thesaurus" https://smartdefine.org/observable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, observable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/observable/thesaurus/synonyms>.
MLASmart Define. "observable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/observable/thesaurus/synonyms>