Definitions

1. adjective

most changeable or unpredictable

“She was the flippest person I’ve ever met, always changing her plans at the last minute.”

2. adjective

most prone to sudden, unpredictable movements or changes

“The flippest parts of the rollercoaster made it an exhilarating ride.”

3. noun

the most unpredictable or changeable person or thing

“The flippest competitor in the tournament caught everyone off guard with their unexpected moves.”