Crop yields are highly volatile and unpredictably so.
The odd shape of the Classic Kong makes it bounce unpredictably when dropped or thrown, so dogs get lots of exercise and mental stimulation when they play with these toys.
Blindness may develop, and the temperature may spike (rise rapidly) and fall unpredictably as the brain structures responsible for temperature regulation are affected.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.