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know every trick in the book
To be aware of or knowledgeable in every possible way to do or achieve something, especially ways that are clever, cunning, or ethically questionable. My dad was a shrewd businessman who knew every trick in the book to seal a deal. If you want girls to be interested in you, my older brother knows every trick in the book.
know full well
To know or be aware of something without any possible doubt. You know full well why I'm upset with you, so there's no use playing dumb! We know full well that many families are struggling to make ends meet, but these tax increases are unavoidable.
know (someone) in the biblical sense
To have (or have had) sexual intercourse with someone. In certain versions of the Bible, "to know someone" means to have sexual relations with him or her, as in Genesis 4:1: "And Adam knew Eve his wife, and she conceived and bore Cain." Bob: "You know Samantha quite well, right?" Dave: "Well, I don't know her in the biblical sense, if that's what you're asking." John is looking very well these days. I'd like to get to know him in the biblical sense, if you know what I mean.
(the) next thing (one) knows
All of a sudden; out of nowhere; without warning. I was standing in line, minding my own business, when the next thing I know, a gunman runs into the bank and starts screaming at us to get on the ground! Tammy had only been on a few dates with Mark, but this one had been going smoothly. Next thing she knew, he got on one knee and proposed to her.
know a hawk from a handsaw
To be able to tell two things apart. The phrase comes from Shakespeare's Hamlet. Of course I know which twin is which, I know a hawk from a handsaw, after all!
know chalk from cheese
To be able to tell two things apart (especially by recognizing their differences). Of course I know which twin is which, I know chalk from cheese, after all! Leah has a beauty mark under her left eye, and Deena doesn't.
know for a fact
To have definitive knowledge of something. I know for a fact that he cheats in cards! I saw the ace up his sleeve. My mom says she knows for a fact that I'm getting the internship at her company, but I won't believe it until the recruiter calls me.
know (something) inside and out
To be well-versed in and/or very familiar with something. I'm ready for this exam—I know genetics inside and out! I think Mary will do great at the audition, now that she knows the dance inside and out. These cabbies know the city streets inside and out.
know (one's) beans
To be knowledgeable about and/or very familiar with something. I had no idea you were such a good piano player—you really know your beans!
To have a familiarity with someone; to know who someone is. Such familiarity can range from close friendship to having only met someone once. Oh yeah, I know Mr. Meyers, he used to be my neighbor. He knew Vanessa long before she became a famous singer.
See also: know
know what's o'clock
To be attentive and aware of all that is going on. Those students thought they could get away with cheating in my class, huh? Too bad I know what's o'clock!
See also: know
know which way the wind blows
To be able to anticipate how a certain course or situation is likely to develop. These politicians know which way the wind blows regarding public opinion on the issue, and you can bet they'll vote accordingly.
know a thing or two
To be knowledgeable about something. Hey, I know a thing or two about art—I was an art history major in college, you know!
know (something) by heart
To have learned or memorized something completely. Ask Becky to recite the poem—she knows it by heart. I can't sing that song in front of an audience if I don't know the words by heart!
know (something) inside out
To know something thoroughly or down to the last detail. I've read this book so many times that I know it inside out. If you study this material for weeks, you'll know it inside out by the test date.
know where (one) stands
1. To know how one is regarded or perceived by someone else. I think I did well in the interview, but I wish I knew where I stood with the recruiter.
2. To know one's position or views on some topic. I'm opposed to this measure, but does anyone know where the boss stands on it?
To be aware or capable of better or smarter behavior than one has demonstrated. You know better than to talk to strangers! What were you thinking? You know better than to try to question that professor—he doesn't care what we have to say.
know the score
To understand the reality of a particular situation, often when that information is displeasing Oh, I know the score—my older sisters are allowed to do things that I'm not.
knew it was comingand (had) known it was coming
to have expected in advance that something was to happen. I shouldn't act surprised. I knew it was coming. It's his own fault. He should have known it was coming.
know a thing or two
(about someone or something) Go to a thing or two (about someone or something).
know better (than to do something)
to be wise enough, experienced enough, or well trained enough not to have done something wrong. Mary should have known better than to accept a lift from a stranger. Children should know better than to play in the road.
know the scoreand know what's what
Fig. to know the facts; to know the facts about life and its difficulties. Bob is so naive. He sure doesn't know the score. I know what you're trying to do. Oh, yes, I know what's what.
Be able to recognize something as wrong or not possible, as in Mary should know better than to leave her child alone in the house, or Try to get in without a ticket? You know better than that. [c. 1700]
know the score
Also, know what's what. Understand what is happening; be familiar with the real story or the full situation. For example, It will take the new legislators some time to know the score, or When it comes to teaching youngsters to read, Nell knows what's what. The first expression, dating from about 1930, alludes to score as a tally of points in a game. The variant dates from about 1400.
know the scoreINFORMAL
COMMON If you know the score, you know and accept the real facts about a situation, even though you may not like them. I know the score — my career will last as long as my looks. Taylor isn't stupid — he knows the score. He has to produce results soon or he'll be out of a job.
know a thing or twobe experienced or shrewd.
1993 Rolling Stone Andy Shernoff …knows a thing or two about great glam punk.
know the scorebe aware of what is going on; be aware of the essential facts about a situation. informal
2002 New York Times Magazine Nowadays, everyone knows the score. Aside from discovering, say, that Tom Hanks is mean, what story of show business ugliness would scandalize us?
know ˈbetter (than that/than to do something)be sensible enough not to do something: You left the car unlocked? I thought you’d know better. ♢ He knows better than to judge by appearances.
know the ˈscore(informal) know the true situation, especially if this is bad: Look, you know the score, we can’t afford a car right now.
know a thing or two (about somebody/something)(informal) know a lot about somebody/something from your own experience: After ten years as a teacher, I know a thing or two about how children learn. ♢ ‘How much do you know about computers?’ ‘Oh, I know a thing or two.’
know the score
tv. to know the way things work in the hard, cruel world. Don’t try to con me. I know the score.
If I knew you were coming, I'd have baked a cake
An expression of delighted surprise at finding someone whose appearance was unanticipated. The title of a 1950 hit record by Eileen Barton, the phrase quickly caught on, and for at least a decade thereafter anyone who appeared where least expected was likely to be greeted with “If I knew you were coming, I'd have baked a cake.”