unpredictably

In surprising ways

In a way that cannot be anticipated or foreseen.

Weather changes unpredictably in the mountains.

A person who behaves unpredictably might be erratic or spontaneous: She unpredictably quit her job and moved to Portugal.

The word often carries a note of unease—unpredictable things are harder to plan for or control.

behavior

erratically

In an inconsistent manner

spontaneously · inconsistently · fitfully · haphazardly · arbitrarily · mercurially · temperamentally · moody · fickle · flighty

timing

sporadically

At irregular intervals

suddenly · unexpectedly · randomly · discontinuously · spasmodically · periodically · occasionally · infrequently · episodically · unevenly

technical

stochastically

In a random manner

probabilistically · variably · dynamically · algorithmically

chaos

turbulently

In an agitated manner

wildly · confusingly · messily · frantically · hectically · frenziedly · stormily

surprise

shockingly

In a startling manner

amazingly · jaw-droppingly · bewilderingly · disarmingly

uncertainty

indeterminately

In an uncertain manner

enigmatically · inscrutably · elusively · nebulously · questionably · doubtfully · incalculably · unforeseeable

Categories
Opposites
predictability

unpredictablypredictably

In an expected manner

foreseeably · expectedly · as expected · like clockwork · consistently

consistency/regularity

unpredictablyconsistently

In an unchanging way

reliably · regularly · steadily · unvaryingly · uniformly

variability/uniformity

unpredictablyunvaryingly

Without ever changing

uniformly · evenly · constantly · unchangingly · steadfastly

Phrases
Family

unpredictable, unpredictability, unpredictables, unpredictabilities

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G