The most common and most likely answer to this crossword clue is the 8 letter word EYEBROWS
I've seen this crossword clue in Financial Times
E
Y
E
B
R
O
W
S
More clues leading to the result EYEBROWS
- They rise in surprise as Matilda reads aloud!
- You’re probably surprised when they go up
- East End intellectuals reported some of their Boat Race?
- You may be surprised if they are arched
- Facial hair I look for it’s said
- Surprise ending rendered worse by what could be raised
- Over-seers’ growth?
- Couple quizzically raised one’s casually viewing broadcast
Buddy explains!
The straight part
We know that "You’re probably surprised when they go up" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case you’re probably surprised when they go up = eyebrows.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 EYEBROWS mean?
EYEBROWS noun- The hair that grows over the bone ridge above the eye socket.
- A dormer, usually of small size, whose roof line over the upright face is typically an arched curve, turning into a reverse curve to meet the horizontal line at either end.
- A clump of waste fibres that builds up in a roller machine.
- To build up waste fibres in a roller machine.
- To signal with one's eyebrows.