sure

adjective
/ʃɔː/

Physically secure and certain, non-failing, reliable.

Example

“This investment is a sure thing.”

Other meanings

Certain in one's knowledge or belief.
Certain to act or be a specified way.
“Be sure to lock the door when you leave.”

Related words

cocksure
footsure
oversure
snowsure
sureball
surefooted
sureness
sureseater
surety
unsure
unsured
for sure

Example sentences

“Make sure the guillotine is in working condition.”
Tatoeba · shekitten · CC0
“I'm not sure if I will respond.”
Tatoeba · ddnktr · CC0
“I'm not sure I understand what it's saying.”
Tatoeba · Miktsoanit · CC0

Word history

From Latin "sēcūrus" (secure).

Where this comes from

This definition is adapted from “sure” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.