| Modern English | Part of Speech | Old English | Inflections | Notes |
|---|---|---|---|---|
| sick | adj. | ādlig | ||
| sick | adj. | sēoc | view | |
| sick | adj. | sīcle | ||
| sickle | nm. | rifter | ||
| sickle | nn. | rīpīsern | ||
| sickle | nm. | sicol | view | |
| sick bed | nn. | legerbedd | ||
| sickness | nf. | ādl | ||
| brain-sick | adj. | brægensēoc | view | |
| sick person | nm. | ādliga | ||
| falling sickness | nf. | fyllesēocnes | view |