erratically
Definitions
In a manner that is not even or regular in pattern or movement; unpredictably.
In a way that deviates from normal or conventional standards.
Examples
The car swerved erratically across the lanes, forcing other drivers to brake suddenly.
Due to the strong winds, the kite flew erratically, dipping and diving in the air.
Synonyms
unpredictably irregularly inconsistently capriciously fitfully sporadically randomly
Antonyms
consistently predictably regularly steadily uniformly methodically dependably