| 1. | (used to express duty or moral obligation): Every citizen ought to help. |
| 2. | (used to express justice, moral rightness, or the like): He ought to be punished. You ought to be ashamed. |
| 3. | (used to express propriety, appropriateness, etc.): You ought to be home early. We ought to bring her some flowers. |
| 4. | (used to express probability or natural consequence): That ought to be our train now. |
| 5. | duty or obligation. |
ought 2 (ôt) pron. & adv. Variant of aught1. |
ought 3 (ôt) n. Variant of aught2. |
ought 4 (ôt) v. Obsolete A past participle of owe. |