The most common and most likely answer to this crossword clue is the 8 letter word IMAGINED
I've seen this crossword clue in The Sunday Telegraph
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More clues leading to the result IMAGINED
- Fancied a military man in tight denim
- Fancied slogan for subversive reporter?
- Dreamed of aged mini being restored
- Thought I was digging to bury silver
- Thought picture should frame fashionable duke
- Bradman’s opposing crossword checker? Not really true!
- I am a soldier Edward fancied
- Thought: I don’t run the paper on whisky!
- Unreal Christmas visitors ate outside, refusing starter
- 18 Fancied by setter, dame collapsed holding drink
Buddy explains!

The straight part
We know that "Fabulous" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fabulous = imagined.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 IMAGINED mean?
IMAGINED verb- To form a mental image of something; to envision or create something in one's mind.
- To believe in something created by one's own mind.
- To assume
- To conjecture or guess
- To use one's imagination
- To contrive in purpose; to scheme; to devise.
- Conceived or envisioned in the mind.