capricious
When you check your bag for a flight, you consign your luggage to the capriciousness of baggage-handlers.
Experts have grappled with the capriciousness of giant panda reproduction across several continents.
The capriciousness of the media can't fully explain why the murder was barely mentioned.
Despite his capriciousness, he's known for possessing a keen mind.

SMART Vocabulary: related words and phrases

Changing frequently
capricious
capriciously
changeable
changeful
dipsy-doodle
inconsistent
inconsistently
inconstant
inconstantly
kaleidoscopic
patchy
ping-pong
protean
raggedly
raggedness
unpredictable
variability
volatility
yo-yoing
zigzag