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no-go
01
used to emphasize that something is completely impossible or prohibited
What is the origin of the idiom "no-go" and when to use it?
The idiom "no-go" is an informal expression that is used to convey that a plan, idea, or situation is not possible, will not work, or is prohibited. It originates from the aviation industry, where "go" means the aircraft is cleared for takeoff.
02
not functioning properly or in suitable condition for proceeding
