1. (dé) to obtain; to get; to gain; to catch (a disease); proper; suitable; proud; contented; to allow; to permit; ready; finished
2. (de) structural particle: used after a verb (or adjective as main verb), linking it to following phrase indicating effect, degree, possibility etc
3. (děi) to have to; must; ought to; to need to

Click on the synonyms to see it on the Chinese dictionary: