| Word | Definitions | Synonyms |
|---|---|---|
| diabolically | (adverb) as a devil; in an evil manner | Synonyms: devilishly, fiendishly |
| diagonally | (adverb) in a diagonal manner | - |
| diagrammatically | (adverb) in a diagrammatic manner | Synonyms: graphically |
| dialectically | (adverb) in a dialectic manner | - |
| diametrically | (adverb) as from opposite ends of a diameter | - |