| Word | Definitions | Synonyms |
|---|---|---|
| dual | (adjective) consisting of or involving two parts or components usually in pairs | Synonyms: double, duple |
| (adjective) a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural) | - | |
| (adjective) having more than one decidedly dissimilar aspects or qualities | Synonyms: double, three-fold, threefold, treble, two-fold, twofold | |
| dualistic | (adjective) of or relating to the philosophical doctrine of dualism | Synonyms: Manichaean |