suss

1 ENTRIES FOUND:
suss /ˈsʌs/ verb
susses; sussed; sussing
suss
/ˈsʌs/
verb
susses; sussed; sussing
Britannica Dictionary definition of SUSS
[+ object] British, informal
1 
: to find or discover (something) by thinking — usually + out
2 
: to inspect or investigate (something) in order to gain more knowledge — usually + out