| 1. | bad or ill in the highest, greatest, or most extreme degree: the worst person. |
| 2. | most faulty, unsatisfactory, or objectionable: the worst paper submitted. |
| 3. | most unfavorable or injurious. |
| 4. | in the poorest condition: the worst house on the block. |
| 5. | most unpleasant, unattractive, or disagreeable: the worst personality I've ever known. |
| 6. | most lacking in skill; least skilled: the worst typist in the group. |
| 7. | that which is worst. |
| 8. | in the most evil, wicked, severe, or disadvantageous manner. |
| 9. | with the most severity, intensity, etc.; in the greatest degree. |
| 10. | to defeat; beat: He worsted him easily. |
| 11. | at worst, if the worst happens; under the worst conditions: He will be expelled from school, at worst. Also, at the worst. |
| 12. | get the worst of something, to be defeated by; lose: to get the worst of a fight. |
| 13. | if worst comes to worst, if the very worst happens: If worst comes to worst, we still have some money in reserve. |
| 14. | in the worst way, Informal. in an extreme degree; very much: She wanted a new robe for Christmas in the worst way. Also, the worst way. |
at worst
Also, at the worst.
In the least favorable circumstance; under the most difficult conditions. For example, Convicted of taking a bribe, the official believed that at worst he would be sentenced to a few months in prison. [1500s]
In the least favorable view or supposition, as in No harm done; at the worst I'll copy the tax return again. Chaucer used this sense in Troilus and Cressida: "For at the worst, it may yet short our way." [Late 1300s] For the antonym, see at best.