Moribund and With one foot in the grave

Moribund adjective - Nearly dead.

With one foot in the grave and moribund are semantically related. In some cases you can use "With one foot in the grave" instead an adjective "Moribund". informal substitute

Moribund and with one foot in the grave are semantically related. Sometimes you can replace term "Moribund" with "With one foot in the grave", this terms are similar.