Suss Definition

sŭs

sussed, susses, sussing

verb

To figure out; grasp, as a result of investigation, study, or intuition.

Webster's New World

To infer or discover; figure. Often used with out:

American Heritage

To size up; study. Often used with out:

American Heritage

(UK, obsolete) To arrest for suspicious behaviour.

Wiktionary

(UK, Australia, New Zealand, often with "out") To discover, infer or figure out.

Wiktionary

adjective

(UK, Australia, New Zealand, colloquial) Suspicious.

Wiktionary

noun

(UK) Suspicious behaviour; the act of loitering with intent.

Wiktionary

(UK) Social nous.

Wiktionary

Origin of Suss

From suspect; originally suss out (“to investigate").

From Wiktionary
Probably short for suspect

From American Heritage Dictionary of the English Language, 5th Edition
From suspicious.

From Wiktionary

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