coast is clear, the

the coast is clear

It is safe to proceed, typically because no one is present or nearby who may interfere. I don't see the security guard, so go ahead—the coast is clear.
See also: clear, coast

coast is clear, the

No observers or authorities are present; one can proceed safely. For example, Let's make sure the coast is clear before we set up this surprise party. This expression may have originated among pirates and smugglers who were referring to the absence of coast guards, or with regard to a coastal military invasion, but no citations bear out these theories. By the late 1500s the term was used purely figuratively.
See also: coast
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