73 entries under heavy topic. ×

3
heavyweight(adjective, great, big, important)
2
big(important, significant, substantial, valuable)
2
considerable(adjective, big, important, powerful)
2
exceptional(great, big, significant, substantial)
2
material(big, important, significant, substantial)
2
ponderous(big, significant, substantial, valuable)
2
substantial(big, important, significant, valuable)
1
big-league(great, extraordinary, outstanding, significant)
1
big-time
1
burdensome(tough, severe, big, substantial)
1
earnest(big, significant, substantial, valuable)
1
fat(big, substantial)
1
four-star
1
front-page(great, big, significant, substantial)
1
grievous(adjective, great, tough, severe)
1
hazardous(adjective, significant, serious, vital)
1
high-power
1
life and death(expression, idiom, great, important)
1
ominous(adjective, important, significant, acute)
1
perilous(adjective, significant, serious, vital)
10 years ago|16k views|share |citing 
APASmart Define. (2016). crucial thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/crucial/thesaurus/synonyms
ChicagoSmart Define. 2016. "crucial thesaurus" https://smartdefine.org/crucial/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, crucial thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/crucial/thesaurus/synonyms>.
MLASmart Define. "crucial thesaurus" 11 March 2016. Web. 30 September 2026. <https://smartdefine.org/crucial/thesaurus/synonyms>