Really bad (8)

I think it could be either:

dreadful

terrible

'really bad' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for terrible that I've seen before include "Frightful" , "What precedes twos < and follows child in France" , "Horrifying" , "Extremely bad" , "Like tsar Ivan IV" .)

I've seen this clue in The Irish Times and The Telegraph.

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