The most common and most likely answer to this crossword clue is the 5 letter word FLUSH
I've seen this crossword clue in The Times
F
L
U
S
H
More clues leading to the result FLUSH
- Look ashamed, maybe even promising hand with money
- Loud drunkard is loaded
- Rush of blood to the hand
- Finish job in WC and look embarrassed
- Wealthy level
- Having lots of money from a poker hand?
- Loaded flat
- Red, but not in the red
- This extension makes east wing of 1ac ideally suited
- Loud drunk to go red in the face
Buddy explains!

The straight part
We know that "Look ashamed/maybe even/promising hand/with money" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case look ashamed/maybe even/promising hand/with money = flush.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 FLUSH mean?
FLUSH noun- A group of birds that have suddenly started up from undergrowth, trees etc.
- To cause to take flight from concealment.
- To take suddenly to flight, especially from cover.
- Smooth, even, aligned; not sticking out.
- Wealthy or well off.
- Short for flush left and right; a body of text aligned with both its left and right margins.
- Full of vigour; fresh; glowing; bright.
- Affluent; abounding; well furnished or suppled; hence, liberal; prodigal.
- A sudden flowing; a rush which fills or overflows, as of water for cleansing purposes.
- Particularly, such a cleansing of a toilet.
- A suffusion of the face with blood, as from fear, shame, modesty, or intensity of feeling of any kind; a blush; a glow.
- Any tinge of red colour like that produced on the cheeks by a sudden rush of blood.
- A sudden flood or rush of feeling; a thrill of excitement, animation, etc.
- To cleanse by flooding with generous quantities of a fluid.
- Particularly, to cleanse a toilet by introducing a large amount of water.
- To become suffused with reddish color due to embarrassment, excitement, overheating, or other systemic disturbance, to blush.
- To cause to blush.
- To cause to be full; to flood; to overflow; to overwhelm with water.
- To excite, inflame.
- (of a toilet) To be cleansed by being flooded with generous quantities of water.
- To clear (a buffer) of its contents.
- To flow and spread suddenly; to rush.
- To show red; to shine suddenly; to glow.
- To fill in (joints); to point the level; to make them flush.
- To operate a placer mine, where the continuous supply of water is insufficient, by holding back the water, and releasing it periodically in a flood.
- To fill underground spaces, especially in coal mines, with material carried by water, which, after drainage, constitutes a compact mass.
- To dispose or be disposed of by flushing down a toilet
- A hand consisting of all cards with the same suit.