erratic
Unpredictable and inconsistent in behavior or pattern
Examples
In a meeting
“Sales have been erratic this quarter, making forecasting difficult.”
Over coffee
“His sleep schedule has been really erratic lately.”
Why this word
unpredictable
erratic emphasizes irregular, inconsistent patterns of behavior, while unpredictable only means hard to forecast
inconsistent
erratic suggests wandering or deviating without pattern or reason, while inconsistent means not matching or contradictory
irregular
erratic implies randomness and lack of reliability, while irregular simply means not following a regular pattern
Usage tip
Suggests lack of pattern or reliability; often describes behavior, performance, or movement
Etymology
Latin 'erraticus' meaning 'wandering' (from 'errare' to wander, err)
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