Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

pactum illicitum

noun
pactum il·​lic·​i·​tum | \-ə̇ˈlisəˌtu̇m\
plural pacta illicita\-​sətə \

Definition of pactum illicitum 

civil law

: an unlawful agreement or one contrary to public policy

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for pactum illicitum

Latin

Keep scrolling for more

Learn More about pactum illicitum

Share pactum illicitum

Statistics for pactum illicitum

Look-up Popularity

Comments on pactum illicitum

What made you want to look up pactum illicitum? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

zibeline

a soft lustrous wool fabric with mohair

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

Ask the Editors

Word Games