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3. overstep (one's)/its mark

overstep (one's)/its mark

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overstep (one's)/its mark

To go further or do more than one should or is permitted to do. I really feel like you overstepped your mark when you started criticizing John's ability as a parent. The city council has overstepped its mark in imposing this steep new income tax on its residents.

See also: mark, overstep