Filled with consternation (7)

I think it could be either:

Which length description are you looking for?:

aghast

'filled with consternation' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for aghast that I've seen before include "What's carried in bag has teacher" , "Very unhappy" , "Amazed" , "Taken aback with horror" , "Filled with consternation or horror" .)

I've seen this clue in the Irish Times (Simplex) and The Sun.

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