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1. To determine, discover, or come to understand something. A noun or pronoun can be used between "suss" and "out." I spent the entire class trying to suss out the meaning of the poem, but I just couldn't get it. It took him a little while, but he sussed it out eventually. We've sent our best operatives to suss the enemy's intentions out.
2. To observe and form an opinion about or estimation of someone or something. A noun or pronoun can be used between "suss" and "out." I strolled around the arena sussing out the competition. I always insist on test-driving a car to suss it out before I'm willing to spend any money.
suss someone out
Sl. to try to figure someone out. I can't seem to suss Tom out. What a strange guy. I don't have any luck sussing out people I don't know well.
1. To infer or discover something; figure something out: The spy sussed out our plans before we began. I don't know his intentions, but I plan to suss them out.
2. To study and evaluate someone; size someone up: They sussed me out and decided I was trustworthy. She's good at sussing out people who apply for the job.