Superlative form of stringy: most stringy.(adjective)
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Use "stringiest" in a sentence
"So you can be subject to stringiest regulation and scrutiny."
"The Devils, the league's stringiest defensive team, shut down the Eastern Conference's third-highest scoring offense, allowing very few quality chances when playing five-on-five."
"He had some very nice cutting instruments, and after carefully considering the ethical implications, I took one of the nicest with me, a beautiful blade designed for cutting through the stringiest flesh."