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Use "leakier" in a sentence
"Blood vessels in normal tissue are impermeable to the nanoparticles, but blood vessels in tumors are "leakier," with much larger pores that allow the nanoparticles to pass through."
"The article you linked to is leakier than a Gulf oil well."
"The disaster that European and IMF officials are currently struggling with in Athens naturally has particularly Greek idiosyncrasies – a tax system leakier than a sieve, for one."