breaking the law, offending ...1621 obs.
from Anglo-French rumpant = French rompant,
pres. pple. of rompre to break
FIRST DOCUMENTED USE
1621 - See Example below
"...And that whatsoever persons or person, that finde or impeach
any of the said vessels Rumpants or forfeits against this act,
by the authority of the same..."
From: Acts and Ordinances in the Fifth Year of Edward the Fourth,
in Sir Richard Bolton's 'The Statutes of Ireland', 1621
• A New English Dictionary on Historical Principles,
James Murray, 1887-1933