In a way or to an extent that is not permissible.(adverb)
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Use "impermissibly" in a sentence
"The contention was that the trial court "impermissibly" declined to allow the jury to determine whether Steven Thomas's ingestion of white lead carbonate caused his lead poisoning."
""impermissibly" burdened by the influx of people rounded up by law enforcement officials and suspected of being unlawful immigrants."
"Their view was that this idea was unduly hostile to religion and impermissibly limited the ability of the majority to govern as it wished."