The most common and most likely answer to this crossword clue is the 13 letter word HAND-TO-MOUTH
I've seen this crossword clue in The Times
H
A
N
D
-
T
O
-
M
O
U
T
H
More clues leading to the result HAND-TO-MOUTH
Buddy explains!
The straight part
We know that "Show of embarrassment/how poor people live?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case show of embarrassment/how poor people live? = hand-to-mouth.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 HAND-TO-MOUTH mean?
HAND-TO-MOUTH adjective- Involving immediate consumption (especially of food) with no provision for the future; having barely enough to survive, in poverty