Infirm

Part of speech: verb (v.)

To weaken; to enfeeble. [Obs.] Sir W. Raleigh.

Part of speech: adjective (a.)

1. Not firm or sound; weak; feeble; as, an infirm body; an infirm constitution. A poor, infirm, weak, and despised old man. Shak.

2. Weak of mind or will; irresolute; vacillating. "An infirm judgment." Burke. Infirm of purpose! Shak.

3. Not solid or stable; insecure; precarious. He who fixes on false principles treads or infirm ground. South.

Synonyms: Debilitated; sickly; feeble; decrepit; weak; enfeebled; irresolute; vacillating; imbecile.