Cryptic crossword clue
Was in the forces, losing heart, having joined up 8

The most common and most likely answer to this crossword clue is the 8 letter word SOLDERED

I've seen this crossword clue in The Daily Telegraph
S
O
L
D
E
R
E
D


Buddy explains!

The straight part
We know that "joined up" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case joined up = soldered.
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 SOLDERED mean?

SOLDERED verb
  1. To join items together, or to coat them with solder
  2. To join things as if with solder.
SOLDERED adjective
  1. Fastened by means of solder.

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