sure (EN)

adjective, adverb

adjective “sure”

1. having no doubt about something
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   She was sure the keys were in her purse, but they turned out to be on the table.
2. dependable and not likely to fail
   The financial transaction is a sure thing.
3. (making) certain that someone does something
   Please be sure to feed the cat before you go to bed.

adverb “sure”

1. definitely or undoubtedly
   Sure she will finish the project on time; she's never missed a deadline before.
2. strongly emphasizing a statement
   She sure knows how to make an entrance.
3. informal agreement or permission
   "Can I borrow your pen for a moment?" "Sure, no problem."