The most common and most likely answer to this crossword clue is the 6 letter word DARING
I've seen this crossword clue in The Times
D
A
R
I
N
G
More clues leading to the result DARING
- Darling, left out as reckless
- Bravery has beloved losing heart
- Courageous favourite losing heart
- Having bottle, sweetheart puts away litres
- Adventurous sweetheart dropped line
- Impulsive sweetheart concealing onset of love
- Attorney to call for defiance
- Bold lad finally coming with a token of love
- Bold call led by lawyer
- Sweetheart not using lube, at first, results in rash
Buddy explains!

The straight part
We know that "Courageous" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case courageous = daring.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 DARING mean?
DARING verb- To have enough courage (to do something).
- To defy or challenge (someone to do something)
- To have enough courage to meet or do something, go somewhere, etc.; to face up to
- To terrify; to daunt.
- To catch (larks) by producing terror through the use of mirrors, scarlet cloth, a hawk, etc., so that they lie still till a net is thrown over them.
- To stare stupidly or vacantly; to gaze as though amazed or terrified.
- To lie or crouch down in fear.
- Boldness.
- Adventurous, willing to take on or look for risks; overbold.
- Courageous or showing bravery; doughty.
- Racy; sexually provocative.