Gearing up to search your origins? That's brave (5)
I believe the answer is:
gutsy
'brave' is the definition.
(I've seen this before)
'gearing up to search your origins?' is the wordplay.
'origins?' suggests taking the first letters (I've seen 'origin' mean this).
The initial letters of 'gearing up to search your' is 'GUTSY'.
'that's' acts as a link.
(Other definitions for gutsy that I've seen before include "Spirited; greedy" , "Courageous, spirited" , "Being full of courage" , "Plucky" , "Sort of (non-standard)" .)