Acted in play about Juliet -- I have part of speech to modify (9)
I believe the answer is:
adjective
'speech to modify' is the definition.
I can't judge whether this defines the answer.
'acted in play about juliet i have' is the wordplay.
'in play' indicates an anagram (letters play around).
'about' indicates putting letters inside.
'juliet' becomes 'J' (phonetic alphabet: alpha, bravo, charlie etc.).
'i have' becomes 'I've' (contraction of 'I have').
'acted' with letters rearranged gives 'adect'.
'adect' placed around 'j' is 'adject'.
'adject'+'ive'='ADJECTIVE'
'part of' is the link.
Can you help me to learn more?
(Other definitions for adjective that I've seen before include "Word qualifying a noun" , "Qualifying or descriptive part of speech" , "It describes a noun" , "Word describing" , "Modifier of a noun" .)