suss out
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
To come to understand (a person).
Register: colloquial
Where it’s used:
Used
American English
Examples
We've sussed him out—he only drinks on Fridays and only in that bar in town.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
To manage to work (something) out, to discover or determine (something).
Register: colloquial
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “suss out” mean?
To come to understand (a person).
Is “suss out” formal or informal?
suss out is generally colloquial.