Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: to sit up straight
She sat bolt upright in bed when I entered the room.
Share sit bolt upright
Resources for sit bolt upright
sit bolt upright
Comments on sit bolt upright
What made you want to look up sit bolt upright? Please tell us where you read or heard it (including the quote, if possible).
by force of circumstances
Get Word of the Day daily email!
Difficult Vocab Quiz
Test your visual vocabulary with our 10-question challenge!
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
Semantic bleaching and the power to amaze
Cans of worms, wild-goose chases, and more
Words from the week of 11/16/2018
This is just to say / Don't confuse them
And is one way more correct than the others?
The story of an imaginary word that managed to sneak past our editors and enter the dictionary.
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
Another round of challenging vocab!
(Secret October WOTD Quiz)
A game of winding words.