Comparative form of flimsy: more flimsy(adjective)
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Use "flimsier" in a sentence
"The government’s gas-mileage standards have been claimed to cause an additional 5000 deaths a year because they lead to people driving more miles in flimsier cars."
"Still, Giuliani has the most-committed voters, while McCain's support is "flimsier," Brown suggests, pointing out that only 42 percent of his voters saying they're a firm commitment."
"Cameron's amendment would render the proposed backbench business committee "flimsier" than it otherwise could be, he added."