suss
verb
[ sʌs ]
• realize or grasp (something).
• "he's sussed it"
suss
noun
• knowledge or awareness of a specified kind.
• "his lack of business suss"
suss
adjective
• shrewd and wary.
• "he is too suss a character to fall into that trap"
Origin:
1930s: abbreviation of suspect, suspicion.