A2 [C] used to refer in an approximate way to an idea, subject, event, action, etc.: That was an unkind thing to say. I've got so many things to do I don't know where to start. Your information is correct but you left out one thing. "What's the matter?" "It's this insurance thing. I'm really worried about it."the thing [C] › the exact fact, object, idea, event, etc.: The article was exactly the thing I needed for my research.the real thing › something that is not false or a copy: The fire alarm goes off accidentally so often that when it's the real thing (= when it really does happen) nobody will take any notice.the same thing B1 the same: Training isn't the same thing as education.the whole thing B2 everything that has been planned or discussed: Let's call the whole thing off. I want to forget the whole thing.above all things › more than everything else: I value my freedom above all things.in all things › in every situation or subject; in everything: Be true to yourself in all things.if there's one thing I want to know, find out, etc. › said before describing what it is that you especially want to know: If there's one thing I want to know, it's where he goes on Thursday afternoons.
a thing B1 [S]
› used instead of "anything" or "everything" to emphasize what you are saying: Don't worry about a thing (= anything). I'll take care of it.not a (single) thing B2 not anything: After the guests had gone, there wasn't a thing left to eat.not have a thing to wear B1 (also have nothing to wear) humorous › to have no clothes that are suitable for an occasion: I'm going to a wedding on Saturday and I don't have a thing to wear.there isn't a thing you can do › you cannot do anything: He broke his promise and there wasn't a thing we could do about it.
for one thing C2 used to introduce a reason for something: "Why won't you come to New York with me?" "For one thing, I don't like flying, and for another, I can't afford it."
thing noun [C]
› a person or animal: When did you eat last, you poor thing? Note: This is used to refer to a person or animal affectionately or sympathetically.