Grey mad in frenzy makes poem of praise (9)
I believe the answer is:
panegyric
'poem of praise' is the definition.
'panegyric' can be an answer for 'praise' (panegyric is a kind of praise). I am not certain of the 'poem of' bit.
'grey mad in frenzy' is the wordplay.
'mad' indicates anagramming the letters.
'in' means one lot of letters goes inside another.
'frenzy' becomes 'panic' (I've seen this before).
'grey' anagrammed gives 'egyr'.
'egyr' put within 'panic' is 'PANEGYRIC'.
'makes' acts as a link.
Can you help me to learn more?
(Other definitions for panegyric that I've seen before include "words of tribute" , "encomium" , "Speech or piece of writing praising person" , "Speech of praise" , "Eulogy" .)