: acting, moving, or changing in ways that are not expected or usual : not consistent or regular
His behavior seemed erratic.
The light flashes at erratic [=irregular, random] intervals.
He's an erratic [=inconsistent] shooter.
erratic [=fluctuating] oil prices
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“Erratic.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/erratic. Accessed 21 Apr. 2026.
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