Definitions

1. adverb

assured or confident that something is true or will happen

“I’m sure it will rain today.”

2. adjective

certain or confident about something

“Are you sure you want to do this?”

3. noun

a person who is certain or confident about something

“He’s a sure bet for the job.”

4. interjection

expressing agreement or confirmation

“Sure, I’ll meet you at 5.”

5. verb

to make something certain or definite

“Can you sure up the plan?”