Flimsy
Flimsy adjective - Being of a material lacking in sturdiness or substance.
Significant is an antonym for flimsy.
Significant
Significant adjective - Having great power or influence.
Usage example: a producer who is playing a significant role in the creation of the new film
Flimsy is an antonym for significant.
Both words in one sentence
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Despite his position as Duly Appointed Enforcer of the Tyrest Accord, Ultra Magnus of Transformers: More than Meets the Eye opposes Tyrest the second he learns of the Chief Justice's plan to exterminate a significant portion of the Cybertronian race on extremely flimsy evidence.
Source: To Be Lawful or Good
Cite this Source
Significant and Flimsy. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/flimsy/significant
Flimsy & Significant. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/flimsy/significant>.
Significant or Flimsy. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/flimsy/significant.
Google Ngram Viewer shows how "flimsy" and "significant" have occurred on timeline