sure adjective - Definition in the Essential American English Dictionary - Cambridge Dictionaries Online

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “sure”

See all translations

sure

adjective
 
/ʃʊər/
A2 certain: I’m sure that he won’t mind. I’m sure about the second answer. →  Opposite unsure
make sure (that) A2 to take action so that you are certain that something happens, is true, etc.: Make sure that you close all the windows before you leave.
for sure B1 without any doubts: I think he’s from Korea but don’t know for sure.
be sure of something to be confident that something is true: He’ll win this year--I’m sure of it.
be sure of yourself to be confident of your own abilities, qualities, etc.: She seems a bit more sure of herself since she got a job.
(Definition of sure adjective from the Websters Essential Mini Dictionary © Cambridge University Press)
Add Cambridge dictionaries to your browser to your website

More Essential American English definitions for “sure”

Definitions of “sure” in other dictionaries

Word of the Day

generous

willing to give money, help, kindness, etc., especially more than is usual or expected

Word of the Day

May I sit here? Asking for and giving permission.

by Liz Walter,
June 03, 2015
We often find ourselves in situations where we need to ask for permission or to reply to people who ask us for permission. Here are some words and phrases to help you do this in a natural way. The simplest way to ask for permission is with the modal verb can: Can

Read More 

ebolaphobia noun

June 01, 2015
irrational fear of the (spread of) the Ebola virus Ebolaphobia Going Viral

Read More