Shit is a strong word used to describe something unpleasant or worthless.
When people use the word 'shit', they usually mean that something is bad or not what they expected. They might say it when their plans fall through, like a cancelled concert ticket: "That's some shit luck." Others might swear when they're unhappy with a service, such as a lousy restaurant experience: "The food was absolute crap – I mean, just pure shit." It's also common to use the word when someone does something foolish or annoying, like making a bad decision: "You really shat on that opportunity."
How common is "shit"?
Word shit is considered uncommon in modern English. It appears most frequently in fiction texts and less often in other writings.
Definitions
noun
Solid excretory product evacuated from the bowels; feces.
An instance of defecation.
Example: Can't a guy take a shit in peace?
Rubbish; worthless matter.
Example: Throw that shit out!
Stuff, things.
Example: Fuck it. I don't feel like doing this shit.
(definite) (the shit) The best of its kind.
Example: These grapes are the shit!
Nonsense; bullshit.
Example: Everything he says is a load of shit.
A nasty, despicable person, used particularly of men.
Example: Her son has been a real shit to her.
(in negations) Anything.
Example: John can't sing for shit. = John can't sing for anything. = John can't sing at all.
A problem or difficult situation.
Example: I'm in some serious shit.
A strong rebuke.
Example: I gave him shit for being three hours late twice in one week.