The most common and most likely answer to this crossword clue is the 5 letter word HAVER
I've seen this crossword clue in The Daily Telegraph
H
A
V
E
R
Buddy explains!
The straight part
We know that "Show hesitation" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case show hesitation = haver.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 HAVER mean?
HAVER verb- To hem and haw
- To talk foolishly; to chatter.
- Oats (the cereal).
- One who has something; a possessor.
- The person who has custody of a document.