sleepwalker

noun
sleep·​walk·​er | \ ˈslēp-ˌwȯ-kər \

Medical Definition of sleepwalker

: one who is subject to somnambulism : one who walks while sleeping

called also somnambulist

Other Words from sleepwalker

sleepwalk \ -​ˌwȯk \ intransitive verb

Learn More about sleepwalker

Share sleepwalker

More from Merriam-Webster on sleepwalker

Spanish Central: Translation of sleepwalker

Nglish: Translation of sleepwalker for Spanish Speakers

Comments on sleepwalker

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

WORD OF THE DAY

to settle judicially or to act as judge

Get Word of the Day daily email!

Test Your Vocabulary

Homophone Quiz

  • three-bears-two-of-them-look-like-theyre-whispering-to-a-third-bear-who-looks-chuffed-to-be-the-center-of-attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

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!