137 entries under significant topic. ×

27
substantial(adjective, importance, powerful, characteristic)
27
foremost(adjective, characteristic, essential, main)
26
material(adjective, substantial, importance, characteristic)
25
great(adjective, excellent, exceptional, valuable, characteristic)
24
urgent(adjective, characteristic, serious, critical, vital)
22
chief(adjective, great, essential, basic)
21
signal(adjective, outstanding, characteristic, great, extraordinary)
21
pivotal(adjective, characteristic, importance, significance)
21
powerful(adjective, strong, effective, influential, characteristic)
20
big(adjective, substantial, famous, valuable)
20
main(adjective, essential, basic, characteristic)
20
necessary(adjective, essential, critical, basic)
20
remarkable(adjective, notable, importance, outstanding, great)
19
considerable(adjective, substantial, large, ample)
19
impressive(adjective, bad, strong, great, excellent)
18
central(adjective, essential, basic, vital)
18
illustrious(adjective, famous, prominent, eminent, great)
18
primary(adjective, substantial, essential, basic)
17
conspicuous(adjective, great, extraordinary, unusual, famous)
17
meaningful(adjective, substantial, strong, big)
10 years ago|57k views|share |citing 
APASmart Define. (2016). important thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/important/thesaurus/synonyms
ChicagoSmart Define. 2016. "important thesaurus" https://smartdefine.org/important/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, important thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/important/thesaurus/synonyms>.
MLASmart Define. "important thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/important/thesaurus/synonyms>