time (alone) will tell | only time will tellidiomPart ofalonetime (alone) will tell | only time will telltime (alone) will tell | only time will tell — idiomidiom1. Used to say that the result of something will only be known in the future.1.idiomDefinitionUsed to say that the result of something will only be known in the future.ExampleOnly time will tell if their marriage will last.Time alone will tell whether the new policy works.