erratic behavior
Wildly inconsistent conduct
Erratic behavior is conduct that is unpredictable, inconsistent, or deviating from normal patterns.
The phrase typically describes someone acting in ways that seem random or unstable: His erratic behavior worried his coworkers.
It often suggests something is wrong—mental distress, substance use, or deteriorating judgment.
In clinical and legal contexts, erratic behavior may trigger intervention or evaluation.
- unpredictableCannot be anticipated
- hot and coldShifting between enthusiasm and disinterest
- volatileLiable to sudden change
- unstableProne to sudden change
- all over the placeScattered without order
manic · frantic · impulsive · chaotic · wild · scattered · going haywire · reckless · mood swings · outbursts · flying off the handle · irrational · unhinged · off the rails · sporadic · fitful · mercurial · temperamental
- chaosmayhem, chaotic, pandemonium, bedlam, turmoil
- Unreliabilityflakiness, inconsistency, undependability, untrustworthiness, unpredictability
- Volatilityvolatility, fluctuation, fluctuations, instability, unpredictability
- Anomaliesanomaly, deviation, aberration, irregularity, oddity
- chancechance, luck, lottery, dice, randomness
- changeabilityvariability, mutability, fickleness, inconstancy, instability
erratic, erratically, erratum, errata, error, errors, erroneous, erroneously, erring