Cryptic crossword clue
Held forth on person living abroad facing one terrible date 10

The most common and most likely answer to this crossword clue is the 10 letter word EXPATIATED

I've seen this crossword clue in The Daily Telegraph
E
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Buddy explains!

The straight part
We know that "Held forth on" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case held forth on = expatiated.
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 EXPATIATED mean?

EXPATIATED verb
  1. To range at large, or without restraint.
  2. To write or speak at length; to be copious in argument or discussion.
  3. To expand; to spread; to extend; to diffuse; to broaden.

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