Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

sennight

noun
sen·​night | \ ˈse-ˌnīt How to pronounce sennight (audio) \
variants: or less commonly se'nnight

Definition of sennight

archaic
: the space of seven nights and days : week

First Known Use of sennight

15th century, in the meaning defined above

History and Etymology for sennight

Middle English, from Old English seofon nihta seven nights

Keep scrolling for more

Learn More about sennight

Statistics for sennight

Look-up Popularity

Time Traveler for sennight

The first known use of sennight was in the 15th century

See more words from the same century

Comments on sennight

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

Show Comments  Hide Comments 

WORD OF THE DAY

acquisitive

Listen to the pronounciation of acquisitive

having a desire to acquire more things

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

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