Examples of “erratic” in a Sentence

adj Unpredictable and inconsistent; changing without any clear pattern.

• The patient's heartbeat was erratic, so the nurse called the doctor.
• The bus service has been erratic all week, sometimes early and sometimes an hour late.
• His erratic behavior worried his colleagues.

noun A large boulder carried far from its origin by a glacier and left behind when the ice melted.

• Geologists explained that the erratic was carried here by a glacier long ago.
• A lone erratic rests on the hilltop, far from any similar rock.
• Hikers stopped to photograph the massive granite erratic sitting alone in the field.