Persuasive queen wandering about - behold time (8)
I believe the answer is:
eloquent
'persuasive' is the definition.
(I know that persuasive can be written as eloquent)
'queen wandering about behold time' is the wordplay.
'wandering' is an anagram indicator.
'about' means one lot of letters goes inside another.
'behold' becomes 'lo' (archaic exclamation meaning 'look!').
'time' becomes 't' (abbreviation).
'queen' is an anagram of 'equen'.
'equen' going around 'lo' is 'eloquen'.
'eloquen'+'t'='ELOQUENT'
(Other definitions for eloquent that I've seen before include "Forceful and persuasive in speech" , "Well-spoken - articulate" , "Possessing fine flow of words" , "Vividly expressive" , "'Silver-tongued, fluent (8)'" .)