Crossword Genius

Scariest, a bumpy flight (9)

Ross

I believe the answer is:

staircase

I'm a little stuck... Click here to teach me more about this clue!

'flight' is the definition.
(a flight of stairs)

'scariest a bumpy' is the wordplay.
'scariest a' anagrams to 'STAIRCASE'.
However, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for staircase that I've seen before include "Situation of flight" , "It's Caesar (anag.)" , "Route between floors" , "A group of linked canal locks" , "Set of steps" .)

I've seen this clue in The Telegraph.
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