Suss definitions

sŭs
To infer or discover; figure. Often used with out.
verb
19
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To size up; study. Often used with out.
verb
16
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To figure out; grasp, as a result of investigation, study, or intuition.
verb
7
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Suss is a British slang term meaning to figure something out.

An example of suss is working out the answer to a difficult math problem.

verb
6
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(UK, Australia, New Zealand, colloquial) Suspicious.
adjective
3
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(UK) Suspicious behaviour; the act of loitering with intent.
noun
3
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(UK, obsolete) To arrest for suspicious behaviour.
verb
0
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(UK, Australia, New Zealand, often with "out") To discover, infer or figure out.
verb
0
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(UK, Australia, New Zealand) To study or size up, to check out (examine).
verb
0
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(UK) Social nous.
noun
0
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Origin of suss

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