The most common and most likely answer to this crossword clue is the 10 letter word SHORT-TERM
I've seen this crossword clue in The Guardian
S
H
O
R
T
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M
More clues leading to the result SHORT-TERM
Buddy explains!
The straight part
We know that "Expedient" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case expedient = short-term.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 SHORT-TERM mean?
SHORT-TERM adjective- Of or pertaining to the near or immediate future.
- Of or pertaining to a short duration of time