tr.v. sussed, suss·ing, suss·es
1. To infer or discover; figure. Often used with out: "I think I'm good at sussing out what's going on" (Ry Cooder).
2. To size up; study. Often used with out: "Suss out the designers in whom you are interested" (Lucia van der Post).
[Probably short for SUSPECT.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.