Adjective: unpredictable ,ún-pri'dik-tu-bul
- Not capable of being foretold
"The unpredictable weather made planning outdoor activities difficult"
- Unknown in advance
"an unpredictable (or indeterminable) future"
- Not occurring at a regular rate or fixed intervals
"an unpredictable heartbeat";
- irregular
See also: aleatoric, aleatory, capricious, episodic, episodical, freakish, indeterminable, occasional, sporadic, uncertain, undeterminable, unforeseeable
Antonym: predictable
Encyclopedia: Unpredictable