1. more trustworthy or reliable
Usage: comparative form of trusty

1. a prisoner who is given special privileges because of good behavior
Usage: prison terminology

Examples

• She proved to be a trustier friend than I had expected.
• The old car was trustier than the newer model.
• He became a trustier after years of good behavior in prison.
• The trustier was allowed to work in the prison library.
• My grandmother’s advice was always trustier than anyone else’s.
• The trustier helped maintain order among the other inmates.