The most common and most likely answer to this crossword clue is the 6 letter word KIBOSH
I've seen this crossword clue in The Guardian
K
I
B
O
S
H
More clues leading to the result KIBOSH
- Put an end to bookish loony dropping round
- Put paid to king, moving bishop not pawn
- Stop child wiping bottom on bunk
- Stop child’s endless nonsense
- Put a stop to one born in Greek island hospital
- Finish off front of Harley and thereupon mostly cycle around
- Put a stop to hoax? Endless nonsense
- Put a stop to some rush so bike got held up
- Tripe starts to kick in, giving nasty smell on mum
- Scupper when truncheon heard laying about heads of incompetent burglars
Buddy explains!

The straight part
We know that "Put paid to" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case put paid to = kibosh.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 KIBOSH mean?
KIBOSH noun- Nonsense, bosh.
- Fashion; style.
- To decisively terminate.