The most common and most likely answer to this crossword clue is the 7 letter word MAULING
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More clues leading to the result MAULING
Buddy explains!
The straight part
We know that "heavy defeat" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case heavy defeat = mauling.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 MAULING mean?
MAULING verb- To handle someone or something in a rough way.
- To savage; to cause serious physical wounds (usually used of an animal).
- To criticise harshly.
- To beat with the heavy hammer called a maul.
- An instance of something being mauled.