variably
Definitions
In a manner that is subject to frequent change or variation.
In a way that is inconsistent or not uniform.
Examples
The weather in the mountains is variably cloudy throughout the day.
The performance of the engine behaved variably depending on the quality of the fuel used.
Synonyms
inconsistently erratically fluctuatingly unpredictably changeably fitfully irregularly
Antonyms
consistently uniformly steadily invariably constantly predictably regularly