countersign

noun
coun·ter·sign | \ˈkau̇n-tər-ˌsīn \

Definition of countersign 

1 : a signature attesting the authenticity of a document already signed by another

2 : a sign given in reply to another specifically : a military secret signal that must be given by one wishing to pass a guard

Keep scrolling for more

Other Words from countersign

countersign transitive verb
countersignature \ˌkau̇n-tər-ˈsig-nə-ˌchu̇r, -chər, -ˌtyu̇r, -ˌtu̇r \ noun

Synonyms for countersign

Synonyms

password, watchword, word

Visit the Thesaurus for More 

Examples of countersign in a Sentence

the guard demanded the countersign

First Known Use of countersign

1591, in the meaning defined at sense 1

Keep scrolling for more

Learn More about countersign

Share countersign

Statistics for countersign

Look-up Popularity

Time Traveler for countersign

The first known use of countersign was in 1591

See more words from the same year

Keep scrolling for more

More Definitions for countersign

countersign

noun
coun·ter·sign | \ˈkau̇n-tər-ˌsīn \

Kids Definition of countersign

: a secret signal that must be given by a person wishing to pass a guard : password

countersign

noun
coun·ter·sign | \ˈkau̇n-tər-ˌsīn \

Legal Definition of countersign 

: a signature attesting the authenticity of a document already signed by another

Keep scrolling for more

Comments on countersign

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

WORD OF THE DAY

to reject or criticize sharply

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
True or False

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

TAKE THE QUIZ
SCRABBLE® Sprint

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!