Unpredictable

adj, noun

adj, noun ·5 syllables ·Common ·High school level

Definitions

Noun
  1. 1
    An unpredictable thing.

    "Other unpredictables, like the recent unexpected blizzards and those of 2 years ago, or a hurricane can cost us many thousands of dollars, and have a severe impact on equipment and facilities."

Adjective
  1. 1
    Unable to be predicted.

    "It has, therefore, always been a major problem for South African railways to cater adequately for this unpredictable city; three stations have had to be built on the present site during the last fifty years."

Adjective
  1. 1
    not occurring at a regular rate or fixed intervals wordnet
  2. 2
    unknown in advance wordnet
  3. 3
    not capable of being foretold wordnet

Synonyms

All synonyms
aleatorycapriciousunforeseeableaccidentaladriftadventitious

Example

More examples

"The accident was caused chiefly by the unpredictable weather."

Etymology

From un- + predictable.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.