discontinuous russian

• переры́вчатый

  intermittent, sporadic, discontinuous, interrupted

• преры́вчатый

  intermittent, discontinuous, broken, jerky

• обрыва́ющийся

  breaking off, snapping, abrupt, interrupted, discontinuous

  precipitous, sheer, steep

• прерыва́вшийся

  interrupted, broken, discontinuous

• скачкообра́зно

  abruptly, by leaps and bounds, discontinuously