Suss out phrase slang
To discover the facts or understand the important things about something.
John cheated on Mary for years, but she never sussed him out.
I sussed out the easiest way to get my work done.
I never did suss out why she gave up her job.
To watch or to look at someone/something carefully and give an opinion about someone/something.
Scientists sussed out these photographs and concluded that there are signs of life on this planet.
The vaccine is not available now because it is still being sussed out by the scientists.
To understand easily what someone is thinking or feeling
To encounter or catch someone who is doing something that they are not prepared for and that reveals something embarrassing or shocking about them
Be able to understand one's behaviour or character
To try to imagine how would you feel if you were in someone's else situation
The verb "suss" must be conjugated according to its tense.
This slang originated in Britain in the 1960s, according to A Dictionary of Slang and Unconventional English, by Eric Partridge.