| 調查HSK 4 | diào chá | investigation; inquiry; to investigate; to survey; survey; (opinion) poll; Classifiers: 项 | |
| 調動HSK 6 | diào dòng | to transfer; to maneuver (troops etc); movement of personnel; to mobilize; to bring into play | |
| 調研 | diào yán | to investigate and research; research; investigation | |
| 調度 | diào dù | to dispatch (vehicles, staff etc); to schedule; to manage; dispatcher; scheduler |
| 調整HSK 5 | tiáo zhěng | to adjust; adjustment; revision; Classifiers: 个 | |
| 調節HSK 6 | tiáo jié | to adjust; to regulate; to harmonize; to reconcile (accountancy etc) | |
| 調控 | tiáo kòng | to regulate; to control |
| 1 | His voice is monotonous. | |
| 2 | The police are investigating the matter. | |
| 3 | This monkey is very mischievous. | |
| 4 | A monotonous job can be very boring. | |
| 5 | The company is conducting market research. |