| 1. | having a rank, unpleasant, stale smell or taste, as through decomposition, esp. of fats or oils: rancid butter. |
| 2. | (of an odor or taste) rank, unpleasant, and stale: a rancid smell. |
| 3. | offensive or nasty; disagreeable. |
rancid ran·cid (rān'sĭd)
adj.
Having the disagreeable odor or taste of decomposing oils or fats.