button up

transitive verb

1
: to close tightly and securely
a tank buttoned up and ready for action
2
: to carry to completion
button up an order or assignment
3
: to bring to complete and final decision or irrevocable settlement

intransitive verb

: to become mum

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!

Dictionary Entries Near button up

Cite this Entry

“Button up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/button%20up. Accessed 26 Nov. 2024.

More from Merriam-Webster on button up

Love words? Need even more definitions?

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