The most common and most likely answer to this crossword clue is the 7 letter word ENSURED
I've seen this crossword clue in The Guardian
E
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S
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D
More clues leading to the result ENSURED
- Made certain spaces suitable for all having wine
- Guaranteed end-user review
- Made certain when monarch’s followed around
- Goal nets absolutely guaranteed
- safely delivered
- Guaranteed safe, when in extremity
- Certain result to invest Republican — and Democrat!
- Guaranteed king will get followed around
- Aim is to keep safe, that’s guaranteed
- Southern city once in dire need made safe
Buddy explains!

The straight part
We know that "Guaranteed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case guaranteed = ensured.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 ENSURED mean?
ENSURED verb- To make a pledge to (someone); to promise, guarantee (someone of something); to assure.
- To make sure or certain of something (usually some future event or condition).