Definition of "suss"
suss2
/sʌs/
adjective
comparative more suss, superlative most suss
(UK, Australia, New Zealand, US, colloquial) Suspicious.
verb
third-person singular simple present susses, present participle sussing, simple past and past participle sussed
(transitive, UK, obsolete) To arrest for suspicious behaviour.
suss3
/sʌs/