| 1. | feeble or weak in body or health, esp. because of age; ailing. |
| 2. | unsteadfast, faltering, or irresolute, as persons or the mind; vacillating: infirm of purpose. |
| 3. | not firm, solid, or strong: an infirm support. |
| 4. | unsound or invalid, as an argument or a property title. |
| 5. | to invalidate. |
infirm in·firm (ĭn-fûrm')
adj.
Weak in body, especially from old age or disease; feeble.