petitionary

From petition +‎ -ary. Doublet of petitioner.

petitionary (not comparable)

1. supplicatory or asking; making a petition
   • c. 1608–1609 (date written), William Shakespeare, “The Tragedy of Coriolanus”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act V, scene i]:

     I have been blown out of your gates with sighs; and conjure thee to pardon Rome and thy petitionary countrymen.

2. Containing a petition, or having the nature of a petition.
   • August 17, 1736, Alexander Pope, letter to Jonathan Swift

     petitionary epistles

• “petitionary”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

• opiniatrety