The most common and most likely answer to this crossword clue is the 7 letter word SWEETEN
I've seen this crossword clue in The Guardian
S
W
E
E
T
E
N
More clues leading to the result SWEETEN
- Submachine-gun loaded by little honey
- Buzz around there, regularly going back for honey
- Son given small number to soften up
- Pacify son, very small, just into double figures
- Put honey in traps set up to catch baby
- Two versions of small figure to placate
- Net’s used to contain short temper
- Make more agreeable to repeatedly small number
- Pacify small, small number
- Very small weapon brought outside in temper
Buddy explains!

The straight part
We know that "Make more agreeable" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case make more agreeable = sweeten.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 SWEETEN mean?
SWEETEN verb- To make sweet to the taste.
- To make (more) pleasant or to the mind or feelings.
- To make mild or kind; to soften.
- To make less painful or laborious; to relieve.
- To soften to the eye; to make delicate.
- To make pure and salubrious by destroying noxious matter.
- To make warm and fertile.
- To restore to purity; to free from taint.
- To make more attractive; said of offers in negotiations.
- To become sweet.