The most common and most likely answer to this crossword clue is the 5 letter word LYING
I've seen this crossword clue in The Times
L
Y
I
N
G
More clues leading to the result LYING
- Dishonest part of family in Genoa
- In no sense upstanding!
- Not standing for mendacity
- Telling stories in bed?
- Prone, possibly, to be retailing pork pies?
- Telling stories, very brief, without introduction
- Prone to be telling fibs
- Telling stories mostly in Greek houses
- Relaxing and telling stories
- In the air? Not initially -- on the ground
Buddy explains!

The straight part
We know that "Dishonest" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dishonest = lying.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 LYING mean?
LYING verb- To rest in a horizontal position on a surface.
- To be placed or situated.
- To abide; to remain for a longer or shorter time; to be in a certain state or condition.
- Used with in: to be or exist; to belong or pertain; to have an abiding place; to consist.
- Used with with: to have sexual relations with.
- Used with on/upon: to be incumbent (on); to be the responsibility of a person.
- To lodge; to sleep.
- To be still or quiet, like one lying down to rest.
- To be sustainable; to be capable of being maintained.
- To give false information intentionally with intent to deceive.
- To convey a false image or impression.
- To be mistaken or unintentionally spread false information.
- The act of one who lies, or keeps low to the ground.
- To rest in a horizontal position on a surface.
- To be placed or situated.
- To abide; to remain for a longer or shorter time; to be in a certain state or condition.
- Used with in: to be or exist; to belong or pertain; to have an abiding place; to consist.
- Used with with: to have sexual relations with.
- Used with on/upon: to be incumbent (on); to be the responsibility of a person.
- To lodge; to sleep.
- To be still or quiet, like one lying down to rest.
- To be sustainable; to be capable of being maintained.
- To give false information intentionally with intent to deceive.
- To convey a false image or impression.
- To be mistaken or unintentionally spread false information.
- An act of telling a lie or falsehood.