The most common and most likely answer to this crossword clue is the 8 letter word BLOOMING
I've seen this crossword clue in The Daily Telegraph
B
L
O
O
M
I
N
G
More clues leading to the result BLOOMING
- Wretched book soon to appear?
- Report of Conservative party leader no longer thriving
- Totally out
- Confounded book imminent
- Becoming visible after first appearance of bud?
- Bishop threatening to be fresh?
- Head of badger emerging, blinking
- Very prosperous with first of lots invested?
- Jolly healthy
- Damned low returns in flashy jewellery
Buddy explains!

The straight part
We know that "Damned" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case damned = blooming.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 BLOOMING mean?
BLOOMING verb- To cause to blossom; to make flourish.
- To bestow a bloom upon; to make blooming or radiant.
- Of a plant, to produce blooms; to open its blooms.
- Of a person, business, etc, to flourish; to be in a state of healthful, growing youth and vigour; to show beauty and freshness.
- (Cooking) To bring out the flavor of a spice by cooking it in oil.
- The act by which something blooms.
- The process of making blooms from the ore or from cast iron.
- A phenomenon where excessive light causes bright patches in a picture.
- Opening in blossoms; flowering.
- Thriving in health, beauty, and vigor, vigour; indicating the freshness and beauties of youth or health.
- Bloody; bleeding; extremely.
- (often followed by well) Bloody; bleeding; extremely.