The most common and most likely answer to this crossword clue is the 4 letter word CLAP
I've seen this crossword clue in Financial Times
C
L
A
P
More clues leading to the result CLAP
- Show appreciation of cold drink
- China about to tip over, making loud noise
- Applaud recognised player collecting half-century
- Applaud evacuation of central Antwerp
- Approvingly receive cold drink
- College friend rising to applaud
- Cold drink that may be appreciated after performance
- Make the sound of thunderous applause?
- Century gets round of cheer
- Cheer international going round lake
Buddy explains!

The straight part
We know that "Applaud" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case applaud = clap.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 CLAP mean?
CLAP noun- The act of striking the palms of the hands, or any two surfaces, together.
- The explosive sound of thunder.
- Any loud, sudden, explosive sound made by striking hard surfaces together, or resembling such a sound.
- A slap with the hand, usually in a jovial manner.
- A single, sudden act or motion; a stroke; a blow.
- The nether part of the beak of a hawk.
- A dropping of cow dung (presumably from the sound made as it hits the ground)
- To strike the palms of the hands together, creating a sharp sound.
- To applaud.
- To slap with the hand in a jovial manner.
- To bring two surfaces together forcefully, creating a sharp sound.
- To come together suddenly with noise.
- To create or assemble (something) hastily (usually followed by up or together).
- To set or put, usually in haste.
- To shoot (somebody) with a gun.
- (with "the") Gonorrhea.