Word for word, very bad time, endlessly (8)
I believe the answer is:
verbatim
'word for word' is the definition.
(synonyms)
I don't understand how the remainder of the clue works.
(Other definitions for verbatim that I've seen before include "exact words" , "In exactly the words used" , "Word for word" , "Faithfully copied" , "To the letter" .)