The most common and most likely answer to this crossword clue is the 9 letter word MOUNTAINS
I've seen this crossword clue in The Daily Telegraph
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Buddy explains!
The straight part
We know that "large amounts" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case large amounts = mountains.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 MOUNTAINS mean?
MOUNTAINS noun- An elevation of land of considerable dimensions rising more or less abruptly, forming a conspicuous figure in the landscape, usually having a small extent of surface at its summit.
- Something very large in size or quantity; a huge amount; a great heap.
- Of, belonging to, relating to, or found on a mountain; like a mountain in size; (of living things) growing or living on a mountain.
- A difficult task or challenge.
- A woman's large breast.
- The twenty-first Lenormand card.
- Wine made from grapes that grow on a mountain.