Learn how to say Erratically correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word erratic:
not even or regular in pattern or movement; unpredictable:
her breathing was erratic
(also erratic block or boulder) Geology a rock or boulder that differs from the surrounding rock and is believed to have been brought from a distance by glacial action:
the source of stone for the whetstones may have been glacial erratics