Synonym: abnormal, changeable, irregular, queer, uncertain, unstable, unusual. Similar words: aberration, narrative, democratic, autocratic, idiosyncratic, errant, terrain, aberrant. Meaning: [ɪ'rætɪk] 
adj. 1. having no fixed course 2. liable to sudden unpredictable change 3. likely to perform unpredictably.
adj. 1. having no fixed course 2. liable to sudden unpredictable change 3. likely to perform unpredictably. 
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1. The electricity supply here is quite erratic.
2. His breathing was becoming erratic.
3. Mary is a gifted but erratic player .
4. He drove in an erratic course down the road.
5. Your work is always erratic.
6. Deliveries of goods are erratic.
7. Argentina's erratic inflation rate threatens to upset the plans.
8. Irrigation measures will be necessary in areas of erratic rainfall.
9. This clock is rather erratic.
10. He is a very erratic football player.
11. Businessmen are displeased with erratic economic policy-making.
12. The singer gave an erratic performance.
13. Douglas was a 29-year-old journeyman fighter[sentencedict.com/erratic.html], erratic in his previous fights.
14. Martin's latest play is as schizoid and erratic as its characters.
15. She can be very erratic, one day she is friendly and the next she'll hardly speak to you.
16. She found it hard to cope with his erratic behaviour.
17. Productivity slowed to an erratic trickle.
18. Dorman-Smith's erratic behaviour had exasperated him already.
19. The scientists pulling his strings are erratic.
20. The erratic winds made fighting the fire more difficult.
21. Above: A Norber erratic on its limestone pedestal.
22. Her behaviour was becoming more and more erratic.
23. The company's erratic performance is a cause for some concern.
24. He said she acted erratic, got the shakes one evening, almost had a nervous breakdown.
25. If the temperature of the heating system seems erratic, the fault may lie with the boiler thermostat.
26. He said she acted erratic, got the shakes one evening and almost had a nervous breakdown.
27. Her erratic gaze paused briefly on the broken nail she was picking with her other hand.
28. She had learnt to live with his sudden changes of mood and erratic behaviour.
29. Every week she wrote to Liza, letters to which she received brief erratic replies.
30. Men would be swayed to this action or that; economic and political life would be erratic and rudderless.
More similar words: aberration, narrative, democratic, autocratic, idiosyncratic, errant, terrain, aberrant, terra firma, or rather, ratification, gratification, narrator, extraterrestrial, ratio, static, rating, ratify, dogmatic, dramatic, for a time, gratify, statically, pragmatic, fanatical, automatic, operation, ratified, operating, statistics.