[L. supinus.] Lying on the back, or with the face upward; opposed to prone.

1. Leaning backward; or inclining with exposure to the sun.

If the vine

On rising ground be plac'd on hills supine--

2. Negligent; heedless; indolent; thoughtless; inattentive.

He became pusillanimous and supine, and openly exposed to any temptation.

These men suffer by their supine credulity.