know no bounds

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know no bounds (third-person singular simple present knows no bounds, present participle knowing no bounds, simple past knew no bounds, past participle known no bounds)

1. To be unlimited in scope or extent.
   • 2011 August 11, Scott Stinson, “Recaps: Jersey Shore, Season 4, Episode 2”, in National Post:

     Ever the gentleman, he takes her to bed, then asks if she needs a taxi. Like, as soon as the act is complete. His douchery really does know no bounds.

• “know no bounds”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “know no bounds” in Longman Dictionary of Contemporary English, Longman.