1. plural of flimsiness; the quality or state of being flimsy, insubstantial, or lacking strength or durability
Usage: countable and uncountable uses; typically used in abstract contexts
2. plural of flimsiness; lack of credibility, plausibility, or logical soundness in an argument or excuse
Usage: abstract use; often applied to reasoning or justifications

Examples

• The flimsinesses of the cardboard boxes made them unsuitable for shipping heavy items.
• Critics pointed out the flimsinesses in the defendant's alibi.
• The architect rejected the design due to the flimsinesses of its structural foundation.
• The report's flimsinesses became apparent during peer review.
• Despite the flimsinesses of the evidence, the jury still had doubts about the prosecution's case.