[ tree-tee ]
/ ˈtri ti /

noun, plural trea·ties.

a formal agreement between two or more states in reference to peace, alliance, commerce, or other international relations.
the formal document embodying such an international agreement.
any agreement or compact.

Origin of treaty

1350–1400; Middle English trete < Anglo-French < Latin tractātus tractate
Related formsnon·trea·ty, noun, plural non·trea·ties. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for treaty

British Dictionary definitions for treaty


/ (ˈtriːtɪ) /

noun plural -ties

Derived Formstreatyless, adjective

Word Origin for treaty

C14: from Old French traité, from Medieval Latin tractātus treaty, from Latin: discussion, from tractāre to manage; see treat
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for treaty



late 14c., "treatment, discussion," from Old French traité "assembly, agreement, treaty," from Latin tractatus "discussion, handling," from tractare "to handle, manage" (see treat). Sense of "contract between nations" is first recorded early 15c.

Online Etymology Dictionary, © 2010 Douglas Harper