syn·​ei·​de·​sis | \ ˌsiˌnīˈdēsə̇s \
plural syneideses\ -​ēˌsēz \

Definition of syneidesis

: the capacity to apply general principles of moral judgment to particular cases distinguished from synderesis

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!

First Known Use of syneidesis

1603, in the meaning defined above

History and Etymology for syneidesis

Medieval Latin, from Greek syneidēsis, literally, consciousness, awareness, from syneidenai to have knowledge of something, be aware of something (from syn- + eidenai to know) + -sis

Keep scrolling for more

Learn More about syneidesis

Time Traveler for syneidesis

Time Traveler

The first known use of syneidesis was in 1603

See more words from the same year

Statistics for syneidesis

Cite this Entry

“Syneidesis.” Dictionary, Merriam-Webster, Accessed 27 Sep. 2020.

Comments on syneidesis

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


Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

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

Love words? Need even more definitions?

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