From the Solemn League and Covenant on ‘extirpation’:
verb [ with obj. ]
root out and destroy completely: the use of every legal measure to extirpate this horrible evil from the land.
ORIGIN: late Middle English (as extirpation): from Latin exstirpare, from ex- ‘out’ + stirps ‘a stem.’
“That we shall in like manner, without respect of persons, endeavour the extirpation of Popery, prelacy (that is, Church government by Archbishops, Bishops, their Chancellors and Commissaries, Deans, Deans and Chapters, Archdeacons, and all other ecclesiastical officers depending on that hierarchy), superstition, heresy, schism, profaneness, and whatsoever shall be found to be contrary to sound doctrine and the power of godliness, lest we partake in other men’s sins, and thereby be in danger to receive of their plagues; and that the Lord may be one, and His name one in the three kingdoms.
We shall with the same sincerity, reality and constancy, in our several vocations, endeavour with our estates and lives mutually to preserve the rights and privileges of the Parliaments, and the liberties of the kingdoms, and to preserve and defend the King’s Majesty’s person and authority, in the preservation and defence of the true religion and liberties of the kingdoms, that the world may bear witness with our consciences of our loyalty, and that we have no thoughts or intentions to diminish His Majesty’s just power and greatness.
We shall also with all faithfulness endeavour the discovery of all such as have been or shall be incendiaries, malignants or evil instruments, by hindering the reformation of religion, dividing the King from his people, or one of the kingdoms from another, or making any faction or parties amongst the people, contrary to the league and covenant, that they may be brought to public trial and receive condign punishment, as the degree of their offences shall require or deserve, or the supreme judicatories of both kingdoms respectively, or others having power from them for that effect, shall judge convenient.”