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(on a small amount of money) to survive with only a small amount of money. I can't get by on that much money. That is a very small amount of money to live on. No one could get by.
(someone or something) to move past someone or something. I need to get by this intersection, and then I will stop and look at the tires. Please let me get by.
get by(with something)
1. to satisfy the minimum requirements. I was failing geometry, but managed to get by with a D. I took the bar exam and just barely got by.
2. Go to get away with something.
get by (without someone or something)
to survive without someone or something. I can't get by without you. We can probably get by without two cars.
get someone or something by someone or somethingand get someone or something by
to get someone or something past an inspection. Do you think I can get my cousin by the border guards? I don't think I can get this sausage by the customs desk.
to exist and have just enough of what you need I think a lot of families can't get by with just one salary. He gets by on snacks.
Usage notes: often followed by with or on, as in the examples
1. Move past, as in There isn't room for this car to get by.
2. Manage to succeed or get along; also, barely succeed. For example, He's getting by even though he only works half-time, or If he applied himself, Paul could be getting A's, but instead he's just getting by. [Early 1900s]
3. Be unnoticed; also, get approval or pass inspection. For example, I wonder if these errors will get by the proofreader, or He hoped the paint job would get by. [Early 1900s]
1. To find a way past or around something: The store was so crowded that it was hard to get by the entranceway.
2. To go unnoticed or ignored by someone: The mistake got by the editor, but the proofreader caught it.
3. To cause something to pass unnoticed or ignored by someone: The smuggler failed to get the drugs by the inspector.
4. To succeed at a level of minimal acceptability or with the minimal amount of effort: When I was in college I just barely got by. There's no way to get by with just half a bottle of cream for the dessert tonight.
5. To succeed in managing; survive: We can get by if we save our money carefully.