The most common and most likely answer to this crossword clue is the 5 letter word DOUBT
I've seen this crossword clue in The Daily Telegraph
D
O
U
B
T
More clues leading to the result DOUBT
- Uncertainty makes engineers abandon temporary fortification
- Suspect Democrat known to have pocketed billions
- Question decision of union boss trusting leaders
- Question the Parisian leaving Elizabethan jacket
- Act recklessly but be sceptical
- Cheat, only to have university raising question
- Reason to give benefit that certain people don’t have
- One is not convinced to give its benefit
- One will have none of it, to be sure
- Distrust inflexible communications company ignoring resistance
Buddy explains!

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 DOUBT mean?
DOUBT noun- Disbelief or uncertainty (about something); a particular instance of such disbelief or uncertainty.
- A point of uncertainty; a query.
- To be undecided about; to lack confidence in; to disbelieve, to question.
- To harbour suspicion about; suspect.
- To anticipate with dread or fear; to apprehend.
- To fill with fear; to affright.
- To dread, to fear.