unpredictable

Often its leaps and flickerings are irregular, inconsistent, unpredictable.

In E science the unpredictable, the incredible, the illogical could happen at any time.

The planet, though, was of no use to humanity because it was unpredictable.

Some changes are unpredictable, even in deterministic principle.

It is that which is by its nature irregular and unpredictable.

Unpredictable: extra fingers or toes or a double dose of cortex?

Now the first unpredictable incident throws you into an uproar.

She was an elusive creature, as unpredictable as a butterfly.

The feeling is spontaneous, unpredictable, and the usual result is fight.

In the atmosphere, it's too unpredictable for any other way.