The most common and most likely answer to this crossword clue is the 10 letter word IRIDESCENT
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More clues leading to the result IRIDESCENT
- Current cycle trail, scintillating
- Hibernian ancestry second husband denied, getting shot!
- One clear trail skirting edge of mirage, shimmering
- One looking into Irish ancestry gets shot
- Madly indiscreet and sparkling
- Everyman on cycling trip with odour, glimmering
- I travel beside trail filled with colour
- Indiscreet novel, extraordinarily colourful
- Colourful flag, slightly depleted stock
- Glistening, I smell after travel
Buddy explains!

The straight part
We know that "extraordinarily colourful" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case extraordinarily colourful = iridescent.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 IRIDESCENT mean?
IRIDESCENT adjective- Producing a display of lustrous, rainbow-like colors; prismatic.
- Brilliant, lustrous, or colorful.