The most common and most likely answer to this crossword clue is the 7 letter word ASSURES
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More clues leading to the result ASSURES
Buddy explains!

The straight part
We know that "provides confidence" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case provides confidence = assures.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ASSURES mean?
ASSURES verb- To make sure and secure.
- (followed by that or of) To give (someone) confidence in the trustworthiness of (something).
- To guarantee, promise (to do something).
- To reassure.