sussed

UK: /ˈsʌst/

Collins Concise English Dictionary © HarperCollins Publishers::

sussed / sʌst/ adjective

1. well-informed; aware

WordReference Random House Unabridged Dictionary of American English © 2025

suss  (sus), 

1. British Terms v.t. [Chiefly Brit. Slang.] to investigate or figure out (usually fol. by out).

• earlier, to suspect, a suspect, shortening of suspect 1965–70

Collins Concise English Dictionary © HarperCollins Publishers::

suss / sʌs/ verb (transitive)

1. (often followed by out) to attempt to work out (a situation, person's character, etc), esp using one's intuition
2. Also: sus to become aware of; suspect (esp in the phrase suss it)

noun

1. sharpness of mind; social astuteness

adjective

Etymology: 20th Century: shortened from suspect