The most common and most likely answer to this crossword clue is the 3 plus 5 letter word SET FORTH
I've seen this crossword clue in The Daily Telegraph
S
E
T
F
O
R
T
H
More clues leading to the result SET FORTH
- Praise group just outside the medal positions, we’re told
- 13 from TV castle – hard
- Embark on an expedition – or an explanation
- Recommend group just outside medal positions reportedly
- Praise fourth man guarding garrison
- Leave group by Scottish river
- Proclaim hardened Scottish banker
- Embark on an expedition — or an explanation
- Leave, determined to go on Scottish river
- Explain and begin a journey
Buddy explains!
The straight part
We know that "Explain/begin a journey" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case explain/begin a journey = set forth.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.