| 1. | (of a ship, boat, etc.) to fill with water and sink. |
| 2. | to fall or sink down, as buildings, ground, etc.: Built on a former lake bed, the building has foundered nearly ten feet. |
| 3. | to become wrecked; fail utterly: The project foundered because public support was lacking. |
| 4. | to stumble, break down, or go lame, as a horse: His mount foundered on the rocky path. |
| 5. | to become ill from overeating. |
| 6. | Veterinary Pathology. (of a horse) to suffer from laminitis. |
| 7. | to cause to fill with water and sink: Rough seas had foundered the ship in mid-ocean. |
| 8. | Veterinary Pathology. to cause (a horse) to break down, go lame, or suffer from laminitis. |
| 9. | Veterinary Pathology. laminitis. |

foun·der 1 (foun'dər) v. foun·dered, foun·der·ing, foun·ders v. intr.
To cause to founder. n. See laminitis. [Middle English foundren, to sink to the ground, from Old French fondrer, from Vulgar Latin *funderāre, from *fundus, *funder-, bottom, from Latin fundus, fund-.] Usage Note: The verbs founder and flounder are often confused. Founder comes from a Latin word meaning "bottom" (as in foundation) and originally referred to knocking enemies down; it is now also used to mean "to fail utterly, collapse." Flounder means "to move clumsily, thrash about," and hence "to proceed in confusion." If John is foundering in Chemistry 1, he had better drop the course; if he is floundering, he may yet pull through. |
founder foun·der (foun'dər)
v. foun·dered, foun·der·ing, foun·ders
To stumble, especially to stumble and go lame. Used of horses.
To become ill from overeating. Used of livestock.
To be afflicted with laminitis. Used of horses.