Not rare words of praise (4,4)
I believe the answer is:
well done
'words of praise' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for well done that I've seen before include "thoroughly prepared" , "expression of praise" , "Words of praise" , "how you might get the chop" , "Congratulations - cooked right through" .)