- Chiefly British Slang. to investigate or figure out (usually followed by out).
Origin of suss
First recorded in 1965–70; earlier, to suspect, a suspect, shortening of suspect
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (often foll by out) to attempt to work out (a situation, person's character, etc), esp using one's intuition
- Also: sus to become aware of; suspect (esp in the phrase suss it)
- sharpness of mind; social astuteness
See also sus laws
C20: shortened from suspect
Word Origin and History for susses
"to figure out, investigate and discover," 1966, earlier "to suspect" (1953, police jargon), a slang shortening of suspect (v.).
Online Etymology Dictionary, © 2010 Douglas Harper