be sure

idiom
Updated on: 15 Nov 2017

Definition of be sure

used to tell someone not to forget to do something
  • Be sure to lock the door when you leave.

Word by Word Definitions

sure play
  1. : safe from danger or harm

  2. : firmly established : steadfast

  3. : reliable, trustworthy

  1. : surely


Seen and Heard

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

Love words? Need even more definitions?

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

Love words? Need even more definitions?

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