verb
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to make an inroad; to take or assume (power, a position, property, rights, etc.) and hold in possession by force or without right; to usurp; to encroach upon.
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to diffuse through the whole of; to pervade.
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to go beyond (a limit, boundary, etc.); to transgress.
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to break (a law, rule, etc.); to violate.
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to step; to tread.