Be aware of master of trivia's return (4)
I believe the answer is:
know
This could be a double definition.
'be aware of' is the first definition.
(I've seen this before)
'master of trivia's return' is the second definition.
'know' can be an answer for 'master' (thesaurus). I'm not certain of the 'of trivia's return' bit.
Can you help me to learn more?
(Other definitions for know that I've seen before include "Be acquainted with" , "Ken" , "Be familiar with" , "Be dangerously well informed" , "Understand" .)