Complex sentence: A single action, even a frivolous one, is not enough to raise a litigant to the level of being declared vexatious, though repeated and severe instances by a single lawyer or firm can result in eventual disbarment.
Split into simpler sentences: A single action, even a frivolous one, is not enough to raise a litigant to the level of being declared vexatious. Repeated and severe instances by a single lawyer or firm can result in eventual disbarment.