The most common and most likely answer to this crossword clue is the 10 letter word STAGNATION
I've seen this crossword clue in The Daily Telegraph
S
T
A
G
N
A
T
I
O
N
More clues leading to the result STAGNATION
- People still suffer from it
- Party people showing a lack of activity
- Inactivity of Ugandan oddly disregarded when filling position
- Lack of progress in country where women are excluded?
- Inactivity shown in male race?
- Male people’s failure to move
- Lack of progress disturbed antagonist
- Decline in male race
- Lack of progress upset antagonist
- Lack of progress for menfolk?
Buddy explains!

The straight part
We know that "Lack of progress" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lack of progress = stagnation.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 STAGNATION mean?
STAGNATION noun- Inactivity
- Being stagnant; being without circulation