| Word | Definitions | Synonyms |
|---|---|---|
| maximum | (adjective) the greatest or most complete or best possible | Synonyms: maximal |
| minimum | (adjective) the least possible | Synonyms: minimal |
| optimum | (adjective) most desirable possible under a restriction expressed or implied | Synonyms: optimal |
| pessimum | (adjective) of an organism's environment; least favorable for survival | Synonyms: pessimal |