How to Use "uncommunicative" with Example Sentences

1. Much psychiatric medicine is undramatic stuff , involving the prescription of drugs to uncommunicative patients .

2. That it is so uncommunicative may simply be due to the fact that it is so new .

3. For a long time I believed there must be wealth of undiscovered treasure behind that uncommunicative manner , but late I wondered if there was anything behind it at all .