pactum

noun

pac·​tum

ˈpäkˌtu̇m

variants or less commonly pactio

-ktēˌō

plural pacta

-ktə

also pactiones

ˌpäktēˈōˌnās

Roman law

: an informal agreement between two or more persons containing one or more promises and usually legally unenforceable even when supported by a sufficient consideration except for certain pacta declared enforceable by praetorian edicts and imperial constitutions if arising out of a lawful cause or inducement

Word History

Etymology

Latin

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now