Adjective "erratic" definition and examples



Definitions and examples


Not even or regular in pattern or movement; unpredictable.
  1. 'Of course, if that kind of erratic weather pattern appeared during winter, then I guessed that a blizzard would appear.'
  2. 'Now scientists say the warming trend, if it continues, will increase the erratic weather patterns.'
  3. 'Rapid eye movement sleep is characterized by a highly erratic breathing pattern and could not be simulated with current technology.'
  4. 'As the herd gained momentum the bells on the lead cows rang out louder and the erratic clanging became a regular tolling.'
  5. 'About 50 minutes later, just as people outside realized there was a problem, the elevator stopped its erratic movements.'
  6. 'Her blood pressure resumed its former erratic pattern.'
  7. 'Room's movements were becoming more erratic and convulsive, and he seemed to have entered a trance-like state.'
  8. 'I tried for a few photographs to show my appreciation but there was a frisky breeze, too light to notice if it were not for the constant erratic movement of flowers and leaves.'
  9. 'The Alice Springs district is dry for much of the year, and has an erratic rainfall pattern, with a slight summer maximum.'
  10. 'A wave of hands suddenly rose high in the air as each one moved about in erratic and unpredictable movements, each as unique as the children's personality.'


A rock or boulder that differs from the surrounding rock and is believed to have been brought from a distance by glacial action.
  1. 'The rocks weighed about 40 kg and included two large pieces of unaltered vesicular basalt with many small attached organisms and numerous smaller rocks including a few glacial erratics.'
  2. 'The road itself twisted and contorted as much as the river as it dodged through and around clusters of trees and boulders: indigenous and erratics.'
  3. 'I stayed off the glacier, stumbling down the left moraine, often catching myself with my arms just before slamming into glacial erratics.'


1. deviating from the usual or proper course in conduct or opinion; eccentric; queer: erratic behavior.

2. having no certain or definite course; wandering; not fixed: erratic winds.

3. Geology. noting or pertaining to a boulder or the like carried by glacial ice and deposited some distance from its place of origin.

4. (of a lichen) having no attachment to the surface on which it grows. noun

5. an erratic or eccentric person.

6. Geology. an erratic boulder or the like.|-

More examples(as adjective)

"tradings can be erratic in/at/on todays."

"levels can be erratic on groups."

"volumes can be erratic on recentlies."

"services can be erratic out of seasons."

"senses can be erratic as interests."

More examples++


Late Middle English: from Old French erratique, from Latin erraticus, from errare ‘to stray, err’.