get by

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]