Quickly and without warning (8)

I believe the answer is:

abruptly

'quickly and without warning' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for abruptly that I've seen before include "brusque manner" , "In curt or disconnected manner" , "Quickly and without warning" , "In a sudden way" , "Suddenly and unexpectedly" .)

I've seen this clue in The Irish Times.

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