The most common and most likely answer to this crossword clue is the 8 letter word ENVISAGE
I've seen this crossword clue in The Guardian
E
N
V
I
S
A
G
E
More clues leading to the result ENVISAGE
- Consider lives in Geneva ordered
- Imagine Wenger naked, embodying very international sex appeal
- Said to begrudge guru’s picture
- Imagine seeing a criminal stealing Victoria’s crown
- Cook given SAE for picture
- Picture making one wise after endless sin
- Imagine most were jealous of round sink
- Imagine vines developing with time
- See veins damaged with advance in years
- Filling in alien visa generally needs picture
Buddy explains!

The straight part
We know that "Imagine" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case imagine = envisage.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 ENVISAGE mean?
ENVISAGE verb- To conceive or see something within one's mind; to imagine or envision.